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Publication numberUS20050043799 A1
Publication typeApplication
Application numberUS 10/961,726
Publication dateFeb 24, 2005
Filing dateOct 8, 2004
Priority dateOct 22, 1999
Also published asUS6811567, US8377103, US9107759, US20020123806, US20080097612, US20100312344, US20130325127, US20150374506
Publication number10961726, 961726, US 2005/0043799 A1, US 2005/043799 A1, US 20050043799 A1, US 20050043799A1, US 2005043799 A1, US 2005043799A1, US-A1-20050043799, US-A1-2005043799, US2005/0043799A1, US2005/043799A1, US20050043799 A1, US20050043799A1, US2005043799 A1, US2005043799A1
InventorsMark Reiley
Original AssigneeArchus Orthopedics Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Facet arthroplasty devices and methods
US 20050043799 A1
Abstract
Surgically installed prostheses replace either the caudal portion of a natural facet joint, the cephalad portion of a natural facet joint, or both. The prostheses are readily attached to the pedicles of a vertebral body and support at least one element that defines an artificial facet joint structure. The caudal facet joint structure is sized and located to articulate with the cephalad facet joint structure. Together, the prostheses form a total facet replacement system. The system is suitable for use in virtually all levels of the spine.
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Claims(1)
1. A facet joint prosthesis to replace, on a vertebral body, a cephalad portion of a natural facet joint, the prosthesis comprising a component sized to be fixed to the vertebral body and including an artificial facet joint structure adapted to replace the cephalad portion of the natural facet joint after removal of the cephalad portion of the natural facet joint from the vertebral body.
Description
    RELATED APPLICATIONS
  • [0001]
    This application is a divisional of U.S. patent application Ser. No. 10/067,137, filed Feb. 4, 2002, which is a continuation-in-part of U.S. patent application Ser. No. 09/693,272, filed Oct. 20, 2000, entitled “Facet Arthroplasty Devices and Methods,” now U.S. Pat. No. 6,610,091, which claims the benefit of Provisional Patent Application Ser. No. 60/160,891, filed Oct. 22, 1999, and entitled “Facet Arthroplasty Devices and Methods,” all of which are incorporated herein by reference.
  • FIELD OF THE INVENTION
  • [0002]
    The present invention generally relates to devices and surgical methods for the treatment of various types of spinal pathologies. More specifically, the present invention is directed to several different types of facet joint replacement prostheses, surgical procedures for performing facet joint replacements, and surgical instruments which may be used to perform the surgical procedures.
  • BACKGROUND OF THE INVENTION
  • [0003]
    Back pain is a common human ailment. In fact, approximately 50% of persons who are over 60 years old suffer from lower back pain. Although many incidences of back pain are due to sprains or muscle strains which tend to be self-limited, some back pain is the result of more chronic fibromuscular, osteoarthritic, or ankylosing spondolytic processes of the lumbosacral area. Particularly in the population of over 50 year olds, and most commonly in women, degenerative spine diseases such as degenerative spondylolisthesis (during which one vertebra slides forward over the top of another vertebra) and spinal stenosis (during which the spinal canal markedly narrows) occurs in a high percentage of the population. Iida, et al, 1989.
  • [0004]
    Degenerative changes of the adult spine have traditionally been determined to be the result of the interrelationship of the three joint complex; the disk and the two facet joints. Degenerative changes in the disc lead to arthritic changes in the facet joint and vice versa. See Farfan and Sullivan, 1967; see also Farfan, 1969; see also Farfan, 1980.
  • [0005]
    One cadaver study of nineteen cadavers with degenerative spondylolisthesis showed that facet degeneration was more advanced than disc degeneration in all but two cases. Farfan. In mild spondylolisthetic cases, the slip appeared to be primarily the result of predominantly unilateral facet subluxation. Other studies into degenerative changes of the spine have revealed extensive contribution of facet joint degeneration to degenerative spinal pathologies such as degenerative spondylolisthesis, central and lateral stenosis, degenerative scoliosis (i.e., curvature of the spine to one side), and kypho-scoliosis, at all levels of the lumbar spine. See Kirkaldy-Willis et al, 1978; see also Rosenberg, 1975.
  • [0006]
    It has been determined that facet joint degeneration particularly contributes to degenerative spinal pathologies in levels of the lumbar spine with sagittally oriented facet joints, i.e. the L4-L5 level.
  • [0007]
    When intractable pain or other neurologic involvement results from adult degenerative spine diseases, such as the ones described above, surgical procedures may become necessary. Traditionally, the surgical management of disease such as spinal stenosis consisted of decompressive laminectomy alone. Herkowitz, et al, The Diagnosis and Management of Degenerative Lumber Spondylolisthesis, 1998. Wide decompressive laminectomies remove the entire lamina, and the marginal osteophytes around the facet joint. Because a lot of degenerative spine disease has been demonstrated to be caused by facet joint degeneration or disease, this procedure removes unnecessary bone from the lamina and insufficient bone from the facet joint.
  • [0008]
    Furthermore, although patients with one or two levels of spinal stenosis tend to do reasonably well with just a one to two level wide decompressive laminectomy, patients whose spinal stenosis is associated with degenerative spondylolisthesis have not seen good results. Lombardi, 1985. Some studies reported a 65% increase in degree of spondylolisthesis in patients treated with wide decompressive laminectomy. See Johnson et al; see also White and Wiltse. The increase in spinal slippage especially increased in patients treated with three or more levels of decompression, particularly in patients with radical laminectomies where all of the facet joints were removed.
  • [0009]
    To reduce the occurrence of increased spondylolisthesis resulting from decompressive laminectomy, surgeons have been combining laminectomies, particularly in patients with three or more levels of decompression, with multi-level arthrodesis, which surgically fuses the facet joints to eliminate motion between adjacent vertebrae. Although patients who undergo concomitant arthrodesis do demonstrate a significantly better outcome with less chance of further vertebral slippage after laminectomy, arthrodesis poses problems of its own. Aside from the occurrence of further spondylolisthesis in some patients, additional effects include non-unions, slow rate of fusion even with autografts, and significant morbidity at the graft donor site. Furthermore, even if the fusion is successful, joint motion is totally eliminated at the fusion site, creating additional stress on healthy segments of the spine which can lead to disc degeneration, herniation, instability spondylolysis, and facet joint arthritis in the healthy segments.
  • [0010]
    An alternative to spinal fusion has been the use of an invertebral disc prosthesis. There are at least 56 artificial disc designs which have been patented or identified as being investigated. McMillin C. R. and Steffee A. D., 20th Annual Meeting of the Society for Biomaterials (abstract)(1994). Although different designs achieve different levels of success with patients, disc replacement mainly helps patients with injured or diseased discs; disc replacement does not address spine pathologies such as spondylolisthesis and spinal stenosis caused by facet joint degeneration or disease.
  • SUMMARY OF THE INVENTION
  • [0011]
    There is a need in the field for prostheses and prosthetic systems to replace injured and/or diseased facet joints, which cause, or are a result of, various spinal diseases. There is also a need for surgical methods to install such prostheses. There is also a need for prostheses and prosthetic systems to replace spinal fusion procedures.
  • [0012]
    The present invention overcomes the problems and disadvantages associated with current strategies and designs in various treatments for adult spine diseases. The present inventive spinal arthroplastic systems avoid the problems of spine stiffness, increased loads on unfused levels, and predictable failure rates associated with spinal arthrodesis. The present invention pertains to spinal prostheses designed to replace facet joints and/or part of the lamina at virtually all spinal levels including L1-L2, L2-L3, L3-L4, L4-L5, L5-S-1, T11-T12, and T12-L1. Various types of joint replacement prostheses are described for treating different types of spinal problems.
  • [0013]
    As will be described in greater detail later, a given natural facet joint has a superior half and an inferior half. In anatomical terms, the superior half of the joint is formed by the vertebral level below the joint (which can thus be called the caudal portion of the facet joint, i.e., because it is near the feet). The inferior half of the joint is formed by the vertebral level above the joint (which can thus be called the cephalad portion of the facet joint, i.e., beacuse it is near the head). For example, in the L4-L5 facet joint, the caudal portion of the joint is formed by boney structure on the L-5 vertebra (e.g., a superior articular suface and supporting bone on the L-5 vertebra), and the cephalad portion of the joint is formed by boney structure on the L-4 vertebra (e.g., an inferior articular surface and supporting bone on the L-4 vertebra).
  • [0014]
    For the sake of description, the prostheses that embody the features of the invention will be called either “cephalad” or “caudad” with relation to the portion of a given facet joint they replace. Thus, a prosthesis that, in use, replaces the caudal portion of a facet joint (i.e., the superior half) will be called a “caudal” prosthesis. Likewise, a prosthesis that, in use, replaces the cephalad portion of a facet joint (i.e., the inferior half) will be called a “cephalad” prosthesis.
  • [0015]
    One aspect of the invention provides a facet joint prosthesis to replace, on a vertebral body, a caudal portion of a natural facet joint (e.g., a superior articular surface and supporting bone structure on the vertebral body). The caudal prosthesis comprises a component sized to be fixed to the vertebral body, e.g., on or near a pedicle. The caudal prosthesis includes an artificial facet joint structure adapted to replace a caudal portion of the natural facet joint after its removal from the vertebral body. The removal of a caudal portion of the natural facet joint and its total replacement by the artificial facet joint structure of the caudal prosthesis frees the orientation of the prosthesis from anatomic constraints imposed by a preexisting articular configuration of the caudal portion of the natural facet joint. Furthermore, the artificial facet joint structure of the caudal prosthesis can comprise an artificial articular configuration that is unlike the preexisting articular configuration, so that a desired articulation or bony anatomy can be restored to achieve a desired level of function.
  • [0016]
    This aspect of the invention also provides a method of replacing, on a vertebral body, a caudal portion of a natural facet joint. The method removes a caudal portion of the natural facet joint from the vertebral body, and, in its place, fixes a component to the vertebral body that includes an artificial facet joint structure adapted to replace the removed caudal portion of the natural facet joint. Desirably, the artificial facet joint structure includes an artificial articular configuration unlike the preexisting articular configuration of the removed caudal portion of the natural facet joint.
  • [0017]
    Another aspect of the invention provides a facet joint prosthesis to replace, on a vertebral body, a cephalad portion of a natural facet joint (e.g., an inferior articular surface and supporting bone structure on the vertebral body). The cephalad prosthesis comprises a component sized to be fixed to the vertebral body, e.g., on or near a pedicle, or on or near a lamina, or on or near a spinous process, or combinations thereof. The cephalad prosthesis includes an artificial facet joint structure adapted to replace a cephalad portion of the natural facet joint after its removal from the vertebral body. As with the removal and total replacement of a caudal portion of the natural facet joint, the removal of a cephalad portion of the natural facet joint and its total replacement by the artificial facet joint structure of the cephalad prosthesis makes possible the orientation of the prosthesis free from anatomic constraints imposed by a preexisting articular configuration of the cephalad portion of the natural facet joint. Furthermore, like the caudal prosthesis, the artificial facet joint structure of the cephalad prosthesis can comprise an artificial articular configuration that is unlike the preexisting articular configuration of the natural facet surface (which is removed), so that a desired articulation or bony anatomy can be totally restored.
  • [0018]
    This aspect of the invention also provides a method of replacing, on a vertebral body, a cephalad portion of a natural facet joint. The method removes a cephalad portion of the natural facet joint from the vertebral body, and, in its place, fixes a component to the vertebral body that includes an artificial facet joint structure adapted to replace the removed cephalad portion of the natural facet joint. Desirably, the artificial facet joint structure includes an artificial articular configuration unlike the preexisting articular configuration of the removed cephalad portion of the natural facet joint.
  • [0019]
    Another aspect of the invention provides a prosthesis assembly and related method for replacing a natural facet joint between adjoining first vertebral body and a second vertebral bodies. The assembly and method utilize a first component sized to be fixed to the first vertebral body, which is superior to the second vertebral body. The first component includes a first artificial facet joint structure adapted to replace a cephalad portion of the natural facet joint on the first vertebral body after removal of the cephalad portion of the natural facet joint from the first vertebral body. The assembly and method also comprise a second component sized to be fixed to the second vertebral body. The second component includes a second artificial facet joint structure adapted to replace the caudad portion of the natural facet joint of the second vertebral body after removal of the caudad portion of the natural facet joint from the second vertebral body. Together, the first and second artificial facet joint structures comprise an artificial facet joint. The removal of both cephalad and caudal portions of a natural facet joint and their total replacement by the artificial facet joint structures of the first and second components allows the artificial facet joint to be installed without anatomic constraints imposed by a preexisting articular configuration of the natural facet joint. The removal of the natural facet joints also removes bone spurs affecting the nerve roots adjacent the natural facet structures, alleviating or eliminating pain. Furthermore, the artificial facet joint structures of either the first or second components, or both, can create an artificial articular configuration for the artificial facet joint that is unlike the preexisting articular configuration of the removed natural facet joint, so that a desired articulation or bony anatomy can be completely restored. By restoring facet joint articulation to a desired level of function, the incidence of spondylolisthesis can be reduced or eliminated. Other features and advantages of the inventions are set forth in the following Description and Drawings, as well as in the appended claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0020]
    FIG. 1 is a lateral view of the L4 and L5 vertebrae;
  • [0021]
    FIG. 2 is a superior view of the L4 and L5 vertebrae in a separated condition;
  • [0022]
    FIG. 3 is a superior section view of a vertebral body, showing the fixation of a caudal prosthesis by pedicle screws to a vertebral body, the prosthesis carrying facet joint structure elements that create artificial facet surfaces for the superior half of a facet joint replacement, the artificial facet joint structure elements in FIG. 3 having a generally cup-shaped geometry and being shown in positions medial of the typical anatomic position of the superior half of the facet joint;
  • [0023]
    FIG. 4 is a superior section view of a vertebral body, showing the fixation of a caudal prosthesis of the type shown in FIG. 3, the length of the prosthesis spanning the pedicles being adjustable, the cup-shaped artificial facet joint structure elements in FIG. 4 being shown in alternative positions either medial or lateral of the typical anatomic position of the superior half of the facet joint;
  • [0024]
    FIG. 5 is a superior section view of a vertebral body, showing the fixation of a caudal prosthesis of the type shown in FIG. 3, the artificial facet joint structure elements in FIG. 5 having a generally ball-shaped geometry and being shown in positions medial of the typical anatomic position of the superior half of the facet joint;
  • [0025]
    FIG. 6 is an enlarged perspective view of a caudal prosthesis of the type shown in FIG. 3, showing a mechanism that allows movement of the artificial facet joint structure elements to adjust their relative spaced-apart positions on the prosthesis;
  • [0026]
    FIG. 7 is a superior section view of a vertebral body, showing the fixation of a caudal prosthesis by pedicle stems to a vertebral body, the prosthesis carrying facet joint structure elements that create artificial facet surfaces for the superior half of a facet joint replacement, the artificial facet joint structure elements in FIG. 7 having a generally cup-shaped geometry and being shown in positions at or near the typical anatomic position of the superior half of the facet joint;
  • [0027]
    FIG. 8 is a superior section view of a vertebral body, showing the fixation of a caudal prosthesis of the type shown in FIG. 7, the artificial facet joint structure elements in FIG. 8 having a generally ball-shaped geometry; and
  • [0028]
    FIG. 9 is a perspective posterior view of the spinal column, showing the fixation of a cephalad prosthesis across the lamina of a vertebral body, the cephalad prosthesis carrying facet joint structure elements that create artificial facet surfaces for the inferior half of a facet joint replacement, FIG. 9 also showing the fixation of a caudal prosthesis of the type shown in FIG. 3 carrying facet joint structure elements that create artificial facet surfaces for the superior half of a facet joint replacement, the two prosthesis together created a total facet replacement system.
  • [0029]
    The invention may be embodied in several forms without departing from its spirit or essential characteristics. The scope of the invention is defined in the appended claims, rather than in the specific description preceding them. All embodiments that fall within the meaning and range of equivalency of the claims are therefore intended to be embraced by the claims.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [heading-0030]
    I. Anatomy of Lumbar Vertebrae
  • [0031]
    FIGS. 1 and 2 show the fourth and fifth lumbar vertebrae L4. and L5, respectively, in a lateral view (while in anatomic association) and in a superior view (separately). The lumbar vertebrae (of which there are a total of five) are in the lower back, also called the “small of the back.”
  • [0032]
    As is typical with vertebrae, the vertebrae L4 and L5 are separated by an intervertebral disk 25. The configuration of the vertebrae L4 and L5 differ somewhat, but each (like vertebrae in general) includes a vertebral body 10, which is the anterior, massive part of bone that gives strength to the vertebral column and supports body weight. The vertebral arch 12 is posterior to the vertebral body 10 and is formed by the right and left pedicles 14 and lamina 16. The pedicles 14 are short, stout processes that join the vertebral arch 12 to the vertebral body 10. The pedicles 14 project posteriorly to meet two broad flat plates of bone, called the lamina 16.
  • [0033]
    Seven other processes arise from the vertebral arch. Three processes—the spinous process 18 and two transverse 20 processes—project from the vertebral arch 12 and afford attachments for back muscles, forming levers that help the muscles move the vertebrae. The remaining four processes, called articular processes, project superiorly from the vertebral arch (and are thus called the superior articular processes 22) and inferiorly from the vertebral arch (and are thus called the inferior articular processes 24).
  • [0034]
    The superior and inferior articular processes 22 and 24 are in opposition with corresponding opposite processes of vertebrae superior and inferior adjacent to them, forming joints, called zygapophysial joints or, in short hand, the facet joints or facets. The facet joints permit gliding movement between the vertebrae L4 and L5. Facet joints are found between adjacent superior and inferior articular processes along the spinal column.
  • [0035]
    The facet joints can deteriorate or otherwise become injured or diseased, causing lack of support for the spinal column, pain, and/or difficulty in movement.
  • [0036]
    As described in this Specification, a facet joint has a superior half and an inferior half. The superior half of the joint is formed by the vertebral level below the joint (which will accordingly be called the caudal portion of the facet joint), and the inferior half of the joint is formed by the vertebral level above the joint (which will accordingly be called the cephalad portion of the facet joint). For example, in the L4-L5 facet joint, the caudal portion of the facet joint is formed by superior articular surfaces and supporting boney structures on the L-5 vertebra, and the cephalad portion of the facet joint is formed by inferior articular surfaces and supporting boney structures on the L-4 vertebra.
  • [heading-0037]
    II. Caudal Universal Facet Prosthesis
  • [0038]
    A. Structure
  • [0039]
    FIG. 3 shows a caudal facet joint replacement prosthesis 26 that embodies features of the invention. The prosthesis 26 is designated “caudal” because it creates an artificial facet joint structure 28 for the superior half of a facet joint replacement. The caudal prosthesis 26 allows for the removal and replacement of injured, diseased and/or deteriorating natural superior articular surfaces and supporting boney structure on the vertebral body below the facet joint, to provide improved support for the spinal column.
  • [0040]
    The artificial facet joint structure 28 articulates with the inferior half of the facet joint, which itself can comprise the natural cephalad portions of the facet joint (i.e., inferior articular surfaces and supporting boney structure on the vertebral body above the facet joint), or an artificial facet joint structure formed by a cephalad joint replacement prosthesis 48 (shown in phantom lines in FIG. 3 and as will be described. later).
  • [0041]
    As will become apparent, the prosthesis 26 is particularly well suited to double-sided procedures and/or for procedures involving vertebral bodies that are not symmetrical.
  • [0042]
    As shown in FIG. 3, the prosthesis 26 comprises a bar element 30. The bar element 30 is secured to a vertebral body 10 by at least one fixation element 32. As also shown in FIG. 3, the bar element 30 carries at least one facet joint structure element 34. In FIG. 3, two fixation elements 32 (left and right) and two facet joint structure elements 34 (left and right) are shown. The prosthesis 26 thereby readily accommodates a double-sided (i.e., left and right) caudal facet joint replacement.
  • [0043]
    The bar element 30 is sized and shaped to span the distance between left and right pedicles 14 of a vertebral body 10. The bar element 30 may be formed of a material commonly used in the prosthetic arts including, but not limited to, polyethylene, rubber, titanium, chrome cobalt, surgical steel, bony in-growth sintering, sintered glass, artificial bone, ceramics, or a combination thereof.
  • [0044]
    As shown in FIG. 3, the spanning length of the bar element 30 may be fixed. Alternatively, as shown in FIG. 4, the spanning length of the bar element 30 may be adjustable by the inclusion of an intermediate sliding joint 36. The adjustment of the spanning length of the bar element 30 may also be made, e.g., by use of a turning gear wheel mechanism, or a ratchet mechanism, or the like. A surgeon thereby has the capability to to size the bar element 30, to custom-fit the prosthesis 26 during surgery.
  • [0045]
    In FIGS. 3 and 4, each end of the bar element includes an opening 38. Each opening 38 accommodates passage of the fixation element 32. In FIG. 1, the fixation elements 32 take the form of pedicle screws or nails. The fixation elements 32 secure the left and right ends of the bar element 30, respectively, to the left and right pedicles 14 of the vertebral body 10.
  • [0046]
    One or both of the openings 38 could be elongated, either along the superior-inferior axis of the vertebral body, or transverse this axis, to allow for varying orientations and/or sizes of the fixation elements 32. Passage of the fixation elements 32 through openings 38 provides straightforward and flexible fixation of the bar element 30 to the vertebral body 10.
  • [0047]
    The bar element 30 shown in FIGS. 3 and 4 carries left and right facet joint structure elements 34. The presence of the bar element 30 spanning between the facet joint structure elements 34 lends overall stability to the prosthesis 26. Weight borne by the left and right facet joint structure elements 34 is evenly distributed by the bar element 30 between the left and right sides of the vertebral body 10.
  • [0048]
    The facet joint structure elements 34 may be fixedly attached to the bar element (e.g., by pre-welding, or by gluing with a biocompatible adhesive) to provide a fixed, pre-ordained spaced apart relationship between the facet surface elements 34. The preordained, fixed position of and the spacing between the facet joint structure elements 34 can vary, e.g., among prostheses 26 intended for children and adults, as well as for male and females. The physician can also select the desired position of the facet joint structure elements 34 based upon prior analysis of the morphology of the targeted joint using, for example, plain film x-ray, fluoroscopic x-ray, or MRI or CT scanning.
  • [0049]
    The facet joint structure elements 28 can be located at or near the typical anatomic position of the caudal portion of the facet joint, which would be generally aligned with the fixation element 32 (as FIG. 7 shows in connection with another embodiment, which will be described later). Alternatively, if desired, and as shown in FIG. 3, the facet joint structure elements 34 can be fixed within a range of pre-ordained locations medial of the typical anatomic location. Still alternatively, and as shown in FIG. 4, one or both of the facet joint structure elements 34 can be fixed within a range of preordained positions lateral of the typical anatomic position.
  • [0050]
    Alternatively, one or both of the facet joint structure elements 34 can be carried by the bar element 30 for relative movement, e.g., in a track 40 extending in the bar element (see FIG. 5). In this arrangement, the position of the movable facet joint structure element(s) 34 can be infinitely varied during surgery to match the particular anatomy of the facet joint or joints being replaced. In this arrangement, a set screw 42 or the like can secure the position of the movable facet joint structure element 34 along the track 40.
  • [0051]
    Whether one or more of the facet joint structure elements 34 are fixed or movable relative to the bar element 30, the prosthesis 26 can accommodate a variety of different symmetric or asymmetric anatomic situations, e.g., where the caudal portion of the facet joint on one side of a vertebral body 10 are differently spaced from those on the other side of the same body 10. The prosthesis 26 can include adjustable facet joint structure elements 34, or, alternatively, it can be pre-formed with various fixed relative positions of left and right facet joint structure elements 34, either symmetric and asymmetric; e.g., left and right typical; or left and right medial; or left and right lateral; or left medial and right lateral, or combinations thereof. The invention thereby makes it possible for a surgeon to install a “custom” implant during the surgical procedure.
  • [0052]
    The facet joint structure elements 34 may be made of a biocompatible polymer (e.g., polyethylene or rubber) , or a biocompatible ceramic, or bony in-growth surface, or sintered glass, or artificial bone, or a combination thereof. The material is selected to provide glide and cushioning ability for potential contacting components. Desirably, these surface materials are, for strength, backed by a biocompatible metal (e.g., titanium, titanium alloys, chrome cobalt, or surgical steel).
  • [0053]
    The geometry of the caudal facet joint structure elements 34 can also vary, depending on the geometry of the matching cephalad portions of a facet joint or facet joint replacement. As shown in FIGS. 3 and 4, the caudal facet joint structure elements 34 may be generally concave or cup-shaped, to thereby articulate with generally convex or ball-shaped facet joint structures of the cephalad portion of the facet joint or facet joint replacement. Alternatively, as shown in FIG. 5, the caudal facet joint structure elements 34 may be generally convex or ball-shaped, to thereby articulate with generally concave or cup-shaped facet joint structure of the cephalad portion of the facet joint replacement.
  • [0054]
    The ball-shaped elements and the cup-shaped elements can have various diameters and arcs of curvature. Preferably, the ball-shaped element is elliptical or round.
  • [0055]
    The cup-shaped elements may be any appropriate shape including, but not limited to, rectangular, disc shaped, trough shaped, or cup shaped. The cup-shaped element is desirably sized larger than the articulating ball-shaped half of the facet joint, to allow for motion of the joint.
  • [0056]
    Regardless of geometry, the facet joint structure elements 34 can be fixedly attached or removably attached, e.g., by Morse tapers 44 (see FIG. 5), or screws, slots, and the like.
  • [0057]
    In an alternative arrangement (see FIG. 7), the bar element 30 and facet joint structure elements 34 form a preformed unit, and the fixation elements 34 comprise stems 46 secured to the vertebral body 10. The stems 46 are secured by insertion into the pedicles 14 (e.g., by screwing or tapping). In FIG. 7, there are two stems 46 inserted, respectively, into the left and right pedicles 14.
  • [0058]
    In this arrangement, the bar element 30 and facet joint structure elements 34 are desirably secured as a preformed unit with compressive forces or friction to the stems 46, e.g., by Morse tapers 44, to thereby enable their removal and replacement as a unit. Alternatively, the bar element 30 and facet joint structure elements 34 can be fixedly attached as a unit to the stem 46, e.g., by adhesive, screw, nail, or any means known in the art.
  • [0059]
    As FIGS. 7 and 8 show, the geometry of the caudal facet joint structure elements 34 on the bar element 30 attached to the stems 46 can vary, as previously described, depending on the geometry of the matching cephalad portions of a facet joint or facet joint replacement. As shown in FIG. 7, the caudal facet joint structure elements 34 may be generally concave or cup-shaped, to thereby articulate with generally convex or ball-shaped facet joint structure of the cephalad portions of the facet joint or facet joint replacement. Alternatively, as shown in FIG. 8, the caudal facet joint structure elements may be generally convex or ball-shaped, to thereby articulate with generally concave or cup-shaped facet surfaces of the cephalad portions of the facet joint replacement.
  • [0060]
    The caudal prosthesis 26 for the superior half of the facet joint replacement described above may be used as a replacement for the caudal portions of one or more of facet joints at any facet joint at any level of the spine. In the preferred embodiment, the prosthesis 26 is used to replace the caudal portion of one or more facet joints. The prosthesis 26 is designed such that it has the appropriate cephalad and caudad directions as well as the appropriate medial/lateral angulation for the given level of the spine where the implant occurs.
  • [0061]
    In further embodiments, one or more surfaces of a prosthesis 26 may be covered with various coatings such as antimicrobial, antithrombotic, and osteoinductive agents, or a combination thereof. See, e.g., U.S. Pat. No. 5,866,113, which is incorporated herein by reference. These agents may further be carried in a biodegradable carrier material with which the pores of the stem and/or cup member of certain embodiments may be impregnated. See, e.g., U.S. Pat. No. 5,947,893, which is also incorporated herein by reference.
  • [0062]
    In still further embodiments of the present invention, the prosthesis 26 may be attached to strengthened or fortified bone. Vertebrae may be strengthened prior to or during fixation of the prostheses using the methods, e.g., described in U.S. Pat. No. 5,827,289, which is incorporated herein by reference. This type of bone strengthening is particularly suggested for osteoporotic patients who wish to have facet replacement.
  • [0063]
    B. Surgical Method for Facet Replacement Using the Caudal Prosthesis
  • [0064]
    A surgical procedure removes and replaces the caudal portion of a facet joint with the caudal prosthesis 26 described above.
  • [0065]
    In one embodiment, the surgical procedure comprises exposing the spinous process, lamina, and facet joints at a desired level of the spine using any method common to those of skill in the medical arts. Prominent bone of the caudal portion of the natural facet joint natural, e.g., the superior articular process 22 and its supporting bone, may rongeured using any means common in the field. The caudal portion of the natural facet joint may also be trimmed to decompress the adjacent nerve root. A reamer or any other instrument that is useful for grinding or scraping bone, may be used to ream the caudal portion of the facet joint into the pedicle, to reach the geometry shown in FIG. 3, which is suitable for receiving the caudal prosthesis 26.
  • [0066]
    The prosthesis can then directly screwed or tapped into the vertebral body 10 using pedicle screws or other fixation elements. Because the caudal portion of the natural facet joint has been removed, the artificial facet joint structure of the caudal prosthesis 26 can be installed in a desired position and orientation, free of anatomic constraints imposed by the preexisting articular configuration of the caudal portion of the natural facet joint. Furthermore, the artificial facet joint structure of the caudal prosthesis 26 can comprise an artificial articular configuration that is unlike the preexisting articular configuration of the natural facet surface (which is removed), so that a desired articulation or bony anatomy can be totally restored. Furthermore, decompression of the adjacent nerve root can be maintained, eliminating pain at the same time a desired anatomy is restored.
  • [0067]
    Further details of surgical procedures suitable for installing the prosthesis 26 are described in co-pending U.S. patent application Ser. No. 09/693,272, filed Oct. 20, 2000, and entitled “Facet Arthroplasty Devices and Methods,” which is incorporated herein by reference.
  • [heading-0068]
    III. Cephaled Prosthesis
  • [0069]
    A. Structure
  • [0070]
    FIG. 9 shows a cephalad facet joint replacement prosthesis 48 that embodies features of the invention. The prosthesis 48 is designated “cephalad” because it provides an artificial facet joint structure element 50 for the inferior half of a facet joint replacement. The cephalad prosthesis 48 allows for the removal and replacement of injured, diseased and/or deteriorating natural inferior articular surfaces and supporting boney structure on the vertebral body above the facet joint, to provide improved support for the spinal column.
  • [0071]
    The artificial facet joint structure 50 articulates with the superior half of the facet joint, which itself can comprise the natural caudal portions of the facet joint (i.e., the natural superior articular surfaces and supporting boney structure on the vertebral body below the facet joint), or an artificial facet joint structure formed by a caudal joint replacement prosthesis 28.
  • [0072]
    In FIG. 9, the superior half of the facet joint replacement comprises the caudal facet joint structure 28 of the prosthesis 26 of the general type shown in FIGS. 3 and 4. In FIG. 9, the caudal facet joint structure 28 comprise cup-shaped caudal facet joint structure elements 34, which, in FIG. 9, are mutually located on the bar element 30 in positions lateral of the typical anatomic location. As shown in FIGS. 3 and 4, the relative position of the cup-shaped caudal facet joint structure elements 34 can vary among the typical anatomic position, a position medial of this position, and a position lateral of this position, as has already been explained. The cephalad facet joint structure elements 50 are positioned to align with the caudal facet joint structure elements 34.
  • [0073]
    The cephalad prosthesis 48 shown in FIG. 9 desirably spans the lamina 16 from the left side of a vertebral body 10 to the right side of the vertebral body 10. The cephalad prosthesis 48 thereby makes possible the removal and replacement of injured, diseased and/or deteriorating components along the cephalad portions of both left and right facet joints, to provide improved support for the spinal column. The cephalad prosthesis 48 allows for replacement of diseased and deteriorating inferior portions of the vertebra and partial replacement of lamina, which may be pressing on the spinal nerves, to relieve pain. The cephalad prosthesis 48 creates artificial facet joint structure elements 50 for the inferior half of facet joints in the spine, which provide improved support for the spinal column.
  • [0074]
    Because the cephalad portion of the natural facet joint is removed, the artificial facet joint structure element 50 of the cephalad prosthesis 48 can be installed in a desired position and orientation, free of anatomic constraints imposed by the preexisting articular configuration of the cephalad portion of the natural facet joint. Furthermore, the artificial facet joint structure element 50 of the cephalad prosthesis 48 can comprise an artificial articular configuration that is unlike the preexisting articular configuration of the natural facet surface (which is removed), so that a desired articulation or bony anatomy can be totally restored. Furthermore, decompression of the adjacent nerve root can be maintained, eliminating pain at the same time a desired anatomy is restored.
  • [0075]
    As FIG. 9 shows, the caudal prosthesis 26, e.g., as described above, may also be installed with the cephalad prosthesis 48, to replace both the caudal and cephalad portions of the natural facet joint, after both caudal and cephalad portions of the natural facet joint are surgically removed. Together, the caudal and cephalad prostheses 26 and 48 form a total facet replacement system 52.
  • [0076]
    Because the system 52 entails removal of both the caudal and cephalad portions of the natural facet joints, the placement of the total facet replacement system 52 is not necessarily constrained by normal anatomic considerations. To attain desired alignment and load conditions, the artificial facet joint structures 28 and 48 can be positioned along, medial of, or lateral of the normal anatomic locations of the facet joints. Likewise, the facet joint structures 28 and 48 can be positioned at or slightly superior or slightly inferior to the normal anatomic location of the facet joints.
  • [0077]
    The system 52 can provide a succession of entirely artificial facet joints along a length of the spinal column. Alternatively, just the inferior half one or more facet joints, or just the superior half of one or more facet joints, may be replaced. The inferior and/or superior halves of facet joints may be replaced on one side of a given vertebra (unilateral), on the both sides of a given vertebra (bilateral), or a combination of each along a length of the spinal column. At the same time a desired bone anatomy is restored, decompression of the adjacent nerve root can be maintained to eliminate pain.
  • [0078]
    In the embodiment shown in FIG. 9, the cephalad prosthesis 48 comprises three separate components—a central component 54 and arm components 56 and 58 (left and right).
  • [0079]
    The central component 54 may be variously constructed. In the illustrated embodiment, the central component 54 comprises a spinous process chimney 60 and left and right lamina plates 62 and 64. The spinous process chimney 60 functions to surround and stabilize the posterior aspect of the spinous process 18. If desired, the spinous process 18 may be fixed between interior walls of the spinous process chimney 60 with a trans-spinous process screw 66.
  • [0080]
    The left and right lamina plates 62 and 64 contact the lamina 16, to aid fixation of the central component 54 to the vertebral body 10. The plates 62 and 64 can be secured to the lamina 16 by various ways, e.g., poly(methylmethacrylate) bone cement, hydroxyapatite, screws, nails, bolts, anchors, break-away screws to facilitate any future removal of the prosthesis, or a combination thereof, or any other means known in the art. Lamina hooks 68 are also desirably used to push against the lamina 16, thereby adding additional stability.
  • [0081]
    The left and right arm components 56 and 58 attach by a coupling to medial sides of the left and right lamina plates 62 and 64. The coupling junction 70 between the arm components 56 and 58 and the lamina plates 62 and 64 may take a number of different forms, including, e.g., a slotted joint between the plate 62/64 and the respective arm 56/58. Alternatively, a screw attachment, a hook attachment, or a snap-fit attachment can be used.
  • [0082]
    The left and right arm components 56 and 58 each include a superior opening 72. Each opening 72 accommodates passage of a fixation element 74. In FIG. 9, the fixation elements 74 take the form of bilateral pedicle screws or nails, but other forms of fixation can be used.
  • [0083]
    The fixation elements 74 secure the superior portions of the left and right arm components 56 and 58, respectively, to the left and right pedicles 14 of the vertebral body 10. One or both openings 72 could be elongated, either along the superior-inferior axis of the vertebral body 10 or transverse this axis, to allow for varying orientations and/or sizes of the pedicle screw.
  • [0084]
    Passage of the pedicle screws through the openings 72 provides straightforward and flexible fixation of the left and right arm components 56 and 58 to the vertebral body. Lamina hooks 68 are also desirably used to push against the lamina 16, thereby adding additional stability.
  • [0085]
    The left and right arm components 56 and 58 also each includes a depending cephalad facet joint structure element 76. The facet joint structure elements 76 are sized and located for articulation with a natural caudal portion of the facet joint or an artificial caudal facet joint structure element.
  • [0086]
    The relative position and geometry of the cephalad facet joint structure elements 76 can of course vary, depending on the relative positions and geometry of the matching natural caudal portion of the facet joint or an artificial caudal facet joint structure element. As shown in FIG. 9, the cephalad facet joint structure elements 76 may be generally convex or ball-shaped, to thereby articulate with generally concave or cup-shaped facet joint structure elements 34 of the caudal prosthesis. This articulation is also shown in phantom lines in FIGS. 3 and 4, with the facet joint structure elements 34 and 76 arranged at alternative, different anatomic positions.
  • [0087]
    Alternatively, as shown in phantom lines in FIG. 5, the cephalad facet joint structure elements 76 may be generally concave or cup-shaped, to thereby articulate with generally convex or ball-shaped facet joint structure elements 34 of the caudal prosthesis.
  • [0088]
    As before explained, the ball-shaped joint structure elements and the cup-shaped joint structure elements can have various diameters and arcs of curvature.
  • [0089]
    Regardless of geometry, as with the caudal facet joint structure elements 34, the cephalad facet joint structure elements 76 can be fixedly attached to the respective arm component 56 and 58. Alternatively, the cephalad facet joint structure elements 76 can be removably attached to the respective arm component 56 and 58, e.g., by Morse tapers 44, or screws, slots, and the like.
  • [0090]
    Regardless of geometry, the cephalad facet joint structure elements 76 may be made of a biocompatible polymer (e.g., polyethylene or rubber), or a biocompatible ceramic, or bony in-growth surface, or sintered glass, or artificial bone, or a combinations thereof. Desirably, these surface materials are backed by a biocompatible metal (e.g., titanium, titanium alloys, chrome cobalt, or surgical steel).
  • [0091]
    The central component 54 and the left and right arm components 62 may be made of material commonly used in the prosthetic arts including, but not limited to, polyethylene, rubber, titanium, chrome cobalt, surgical steel, bony in-growth sintering, sintered glass, artificial bone, ceramics, or a combination thereof.
  • [0092]
    In further embodiments, one or more surfaces of the cephalad prosthesis 48 may be covered with various coatings such as antimicrobial, antithrombotic, and osteoinductive agents, or a combination thereof. See, e.g., U.S. Pat. No. 5,866,113, which is incorporated herein by reference. These agents may further be carried in a biodegradable carrier material with which the pores of the base member and/or any screws, bolts, or nails of certain embodiments may be impregnated. See, e.g., U.S. Pat. No. 5,947,893, which is incorporated herein by reference.
  • [0093]
    In other arrangements, the cephalad prosthesis 48 may be attached to strengthened or fortified bone. Vertebrae may be strengthened prior to or during fixation of the prosthesis using the methods described, e.g., in U.S. Pat. No. 5,827,289, which is incorporated herein by reference. This type of bone strengthening is particularly suggested for osteoporotic patients who wish to have facet replacement.
  • [0094]
    B. Surgical Method for Lamina/Facet Replacement
  • [0095]
    Using the Cephalad Prosthesis
  • [0096]
    A surgical procedure removes and replaces the inferior lamina 16 and the cephalad portion of the facet joint (e.g., the articulated inferior processes 24 and its supporting bone of the targeted vertebral body 10) with the cephalad prosthesis 48 as described above.
  • [0097]
    In one embodiment, the surgical procedure exposes the spinous process, lamina, and facet joints at a desired level of the spine using any method common to those of skill in the medical arts. The cephalad portion of the facet joint is cut at or near a selected resection line. Most of the lamina 16 is desirably preserved, as is the facet joint capsule, which may be opened and folded back. The facet joint capsule may be cut perpendicular to its direction. The cephalad portion of the facet joint may then be retracted from the caudal portion. Once the facet joint 620 is separated, the cut inferior bone of the upper joint (e.g., the cut inferior portion of the L4 vertebra in the L4-L5 joint) may be removed. Alternatively, it may be possible to remove the cut inferior bone while simultaneously separating the facet joint.
  • [0098]
    The caudal prosthesis 26 can also be installed as previously described, either before of after the inferior bone is removed or even cut.
  • [0099]
    The cephalad prosthesis 48 as described above is placed over the spinous process 18 over the lamina 16. The cephalad prosthesis 48 is attached as above described to the lamina 16 and to each pedicle. The cephalad prosthesis 48 may also be further attached to the spinous process 18 with a trans-spinous-process screw 66 to provide additional stability, as also previously described.
  • [0100]
    Further details of surgical procedures suitable for installing the prosthesis 48 are described in co-pending U.S. patent application Ser. No. 09/693,272, filed Oct. 20, 2000, and entitled “Facet Arthroplasty Devices and Methods,” which is incorporated herein by reference.
  • [0101]
    The size and shape of any prosthesis disclosed herein are desirably selected by the physician, taking into account the morphology and geometry of the site to be treated. The shape of the joint, the bones and soft tissues involved, and the local structures that could be harmed if move inappropriately, are generally understood by medical professionals using textbooks of human anatomy along with their knowledge of the site and its disease and/or injury. The physician is also desirably able to select the desired shape and size of the prosthesis and its placement in and/or around the joint. based upon prior analysis of the morphology of the targeted joint using, for example, plain film x-ray, fluoroscopic x-ray, or MRI or CT scanning. The shape, size and placement are desirably selected to optimize the strength and ultimate bonding of the prosthesis to the surrounding bone and/or tissue of the joint.
  • [0102]
    Other embodiments and uses of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. All documents referenced herein are specifically and entirely incorporated by reference. The specification and examples should be considered exemplary only with the true scope and spirit of the invention indicated by the following claims. As will be easily understood by those of ordinary skill in the art, variations and modifications of each of the disclosed embodiments can be easily made within the scope of this invention as defined by the following claims.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2502902 *Jan 25, 1946Apr 4, 1950Tofflemire Benjamin FIntraoral fracture and orthodontic appliance
US2930133 *Jul 8, 1957Mar 29, 1960Thompson Joseph ClayApparatus to aid in determining abnormal positions of spinal vertebrae
US3710789 *Dec 4, 1970Jan 16, 1973Univ MinnesotaMethod of repairing bone fractures with expanded metal
US3867728 *Apr 5, 1973Feb 25, 1975Cutter LabProsthesis for spinal repair
US3875595 *Apr 15, 1974Apr 8, 1975Froning Edward CIntervertebral disc prosthesis and instruments for locating same
US3941127 *Oct 3, 1974Mar 2, 1976Froning Edward CApparatus and method for stereotaxic lateral extradural disc puncture
US4156296 *Apr 8, 1977May 29, 1979Bio-Dynamics, Inc.Great (large) toe prosthesis and method of implanting
US4502161 *Aug 19, 1983Mar 5, 1985Wall W HProsthetic meniscus for the repair of joints
US4805602 *Nov 3, 1986Feb 21, 1989Danninger Medical TechnologyTranspedicular screw and rod system
US4904260 *Jul 25, 1988Feb 27, 1990Cedar Surgical, Inc.Prosthetic disc containing therapeutic material
US4911718 *Jun 10, 1988Mar 27, 1990University Of Medicine & Dentistry Of N.J.Functional and biocompatible intervertebral disc spacer
US4917701 *Sep 12, 1988Apr 17, 1990Morgan Douglas HTemporomandibular joint prostheses
US4987904 *Mar 22, 1990Jan 29, 1991Wilson James TMethod and apparatus for bone size gauging
US5000165 *May 15, 1989Mar 19, 1991Watanabe Robert SLumbar spine rod fixation system
US5010503 *Apr 20, 1988Apr 23, 1991Institut Elektrosvarki Imeni E.O. Patona Akademii Nauk Ukrainskoi SsrApparatus for acoustic-emission inspection of articles
US5015255 *May 10, 1989May 14, 1991Spine-Tech, Inc.Spinal stabilization method
US5019081 *Dec 10, 1986May 28, 1991Watanabe Robert SLaminectomy surgical process
US5092866 *Feb 2, 1990Mar 3, 1992Breard Francis HFlexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column
US5108399 *Sep 15, 1989Apr 28, 1992Boehringer Ingelheim GmbhDevice for osteosynthesis and process for producing it
US5284655 *Feb 4, 1992Feb 8, 1994Osteotech, Inc.Swollen demineralized bone particles, flowable osteogenic composition containing same and use of the composition in the repair of osseous defects
US5300073 *Jan 28, 1992Apr 5, 1994Salut, Ltd.Sacral implant system
US5303480 *Nov 27, 1992Apr 19, 1994Chek Paul WCranio-cervical sagittal-alignment caliper and universal measurement system
US5312409 *Jun 1, 1992May 17, 1994Mclaughlin Robert EDrill alignment guide
US5314429 *Nov 29, 1991May 24, 1994Marlowe Goble EMethod for forming a tunnel intersecting a straight cruciate ligament tunnel
US5314476 *Sep 10, 1993May 24, 1994Osteotech, Inc.Demineralized bone particles and flowable osteogenic composition containing same
US5314486 *Jan 19, 1993May 24, 1994Microaire Surgical Instruments, Inc.Non-constrained total joint system
US5314492 *May 11, 1992May 24, 1994Johnson & Johnson Orthopaedics, Inc.Composite prosthesis
US5405390 *Jun 2, 1993Apr 11, 1995Osteotech, Inc.Osteogenic composition and implant containing same
US5413576 *Feb 10, 1993May 9, 1995Rivard; Charles-HilaireApparatus for treating spinal disorder
US5415659 *Dec 1, 1993May 16, 1995Amei Technologies Inc.Spinal fixation system and pedicle clamp
US5415661 *Mar 24, 1993May 16, 1995University Of MiamiImplantable spinal assist device
US5491882 *Sep 13, 1994Feb 20, 1996Walston; D. KennethMethod of making joint prosthesis having PTFE cushion
US5501684 *Jun 25, 1992Mar 26, 1996Synthes (U.S.A.)Osteosynthetic fixation device
US5507823 *Sep 15, 1994Apr 16, 1996Walston; D. KennethJoint prosthesis having PTFE cushion
US5510396 *Mar 9, 1994Apr 23, 1996Osteotech, Inc.Process for producing flowable osteogenic composition containing demineralized bone particles
US5603713 *Sep 29, 1994Feb 18, 1997Aust; Gilbert M.Anterior lumbar/cervical bicortical compression plate
US5609641 *Jan 31, 1995Mar 11, 1997Smith & Nephew Richards Inc.Tibial prosthesis
US5704941 *Nov 3, 1995Jan 6, 1998Osteonics Corp.Tibial preparation apparatus and method
US5725527 *Mar 27, 1996Mar 10, 1998Biedermann Motech GmbhAnchoring member
US5738585 *Aug 8, 1996Apr 14, 1998Hoyt, Iii; Raymond EarlCompact flexible couplings with inside diameter belt support and lock-on features
US5741255 *Jun 5, 1996Apr 21, 1998Acromed CorporationSpinal column retaining apparatus
US5741261 *Jun 25, 1996Apr 21, 1998Sdgi Holdings, Inc.Minimally invasive spinal surgical methods and instruments
US5860977 *Oct 27, 1997Jan 19, 1999Saint Francis Medical Technologies, LlcSpine distraction implant and method
US5863293 *Oct 18, 1996Jan 26, 1999Spinal InnovationsSpinal implant fixation assembly
US5866113 *Mar 7, 1997Feb 2, 1999Medtronic, Inc.Medical device with biomolecule-coated surface graft matrix
US5879350 *Sep 24, 1996Mar 9, 1999Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5879396 *Apr 25, 1997Mar 9, 1999Walston; D. KennethJoint prosthesis having PTFE cushion
US5885285 *Dec 16, 1996Mar 23, 1999Simonson; Peter MelottSpinal implant connection assembly
US5885286 *Feb 11, 1997Mar 23, 1999Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5891145 *Jul 14, 1997Apr 6, 1999Sdgi Holdings, Inc.Multi-axial screw
US6019759 *Dec 6, 1996Feb 1, 2000Rogozinski; ChaimMulti-Directional fasteners or attachment devices for spinal implant elements
US6022350 *May 12, 1997Feb 8, 2000Stryker France S.A.Bone fixing device, in particular for fixing to the sacrum during osteosynthesis of the backbone
US6048342 *Oct 27, 1998Apr 11, 2000St. Francis Medical Technologies, Inc.Spine distraction implant
US6050997 *Jan 25, 1999Apr 18, 2000Mullane; Thomas S.Spinal fixation system
US6053917 *Mar 9, 1999Apr 25, 2000Sdgi Holdings, Inc.Multi-axial bone screw assembly
US6068630 *Oct 20, 1998May 30, 2000St. Francis Medical Technologies, Inc.Spine distraction implant
US6190388 *Jan 19, 2000Feb 20, 2001Gary K. MichelsonAnterior spinal instrumentation and method for implantation and revision
US6193724 *Nov 25, 1998Feb 27, 2001Kwan-Ho ChanApparatus and method for determining the relative position of bones during surgery
US6193758 *Oct 2, 1998Feb 27, 2001Acumed, Inc.Shoulder prosthesis
US6200322 *Aug 13, 1999Mar 13, 2001Sdgi Holdings, Inc.Minimal exposure posterior spinal interbody instrumentation and technique
US6214012 *Nov 13, 1998Apr 10, 2001Harrington Arthritis Research CenterMethod and apparatus for delivering material to a desired location
US6231575 *Aug 16, 1999May 15, 2001Martin H. KragSpinal column retainer
US6340361 *Sep 2, 1999Jan 22, 2002Karl H. KrausExternal fixator clamp and system
US6361506 *Jul 20, 2000Mar 26, 2002Sulzer Orthopedics Inc.Incremental varus/valgus and flexion/extension measuring instrument
US6368320 *Dec 8, 1998Apr 9, 2002(Dimso) Distribution Medicale Du Sud-OuestConnector for backbone osteosynthesis device
US6565565 *Jan 19, 2000May 20, 2003Howmedica Osteonics Corp.Device for securing spinal rods
US6565605 *Dec 13, 2000May 20, 2003Medicinelodge, Inc.Multiple facet joint replacement
US6712818 *Jul 17, 2000Mar 30, 2004Gary K. MichelsonMethod for connecting adjacent vertebral bodies of a human spine with a plating system
US20020029039 *Apr 26, 2001Mar 7, 2002Zucherman James F.Supplemental spine fixation device and methods
US20030004572 *Mar 4, 2002Jan 2, 2003Goble E. MarloweMethod and apparatus for spine joint replacement
US20030028250 *May 30, 2002Feb 6, 2003Archus Orthopedics, Inc.Prostheses, systems and methods for replacement of natural facet joints with artifical facet joint surfaces
US20040006391 *Jul 9, 2003Jan 8, 2004Archus Orthopedics Inc.Facet arthroplasty devices and methods
US20040049272 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049273 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet Arthroplasty devices and methods
US20040049274 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049275 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049276 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049277 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049278 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049281 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040059429 *Sep 17, 2003Mar 25, 2004Uri AminMechanically attached elastomeric cover for prosthesis
US20050010291 *Jul 8, 2003Jan 13, 2005Archus Orthopedics Inc.Prostheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US20050027361 *Jul 6, 2004Feb 3, 2005Reiley Mark A.Facet arthroplasty devices and methods
US20050049705 *Aug 29, 2003Mar 3, 2005Hale Horace WinstonFacet implant
US20050080486 *Oct 17, 2003Apr 14, 2005Fallin T. WadeFacet joint replacement
US20050085912 *Dec 16, 2003Apr 21, 2005Uri ArninFacet prosthesis
US20050102028 *Jan 5, 2004May 12, 2005Uri ArninSpinal prostheses
US20060009847 *Sep 9, 2005Jan 12, 2006Reiley Mark AFacet arthroplasty devices and methods
US20060009848 *Sep 9, 2005Jan 12, 2006Reiley Mark AFacet arthroplasty device and methods
US20060009849 *Sep 9, 2005Jan 12, 2006Reiley Mark AFacet arthroplasty devices and methods
US20060041311 *Aug 18, 2005Feb 23, 2006Mcleer Thomas JDevices and methods for treating facet joints
US20060052785 *Aug 17, 2005Mar 9, 2006Augostino Teena MAdjacent level facet arthroplasty devices, spine stabilization systems, and methods
US20060058791 *Aug 17, 2005Mar 16, 2006Richard BromanImplantable spinal device revision system
US20060079895 *May 26, 2005Apr 13, 2006Mcleer Thomas JMethods and devices for improved bonding of devices to bone
US20060085072 *Sep 26, 2005Apr 20, 2006Archus Orthopedics, Inc.Implantable orthopedic device component selection instrument and methods
US20060085075 *Oct 4, 2005Apr 20, 2006Archus Orthopedics, Inc.Polymeric joint complex and methods of use
US20060100707 *Jan 3, 2006May 11, 2006David StinsonProstheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US20070079517 *Dec 8, 2006Apr 12, 2007Augostino Teena MFacet joint prosthesis measurement and implant tools
US20070088358 *Mar 22, 2006Apr 19, 2007Hansen YuanMinimally Invasive Spine Restoration Systems, Devices, Methods and Kits
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7182783Apr 25, 2005Feb 27, 2007Sdgi Holdings, Inc.Selectively expandable composite structures for spinal arthroplasty
US7674293Mar 9, 2010Facet Solutions, Inc.Crossbar spinal prosthesis having a modular design and related implantation methods
US7691145Oct 25, 2004Apr 6, 2010Facet Solutions, Inc.Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces
US7722647Mar 14, 2005May 25, 2010Facet Solutions, Inc.Apparatus and method for posterior vertebral stabilization
US7753937Jun 2, 2004Jul 13, 2010Facet Solutions Inc.Linked bilateral spinal facet implants and methods of use
US7815648Sep 29, 2008Oct 19, 2010Facet Solutions, IncSurgical measurement systems and methods
US7846183Dec 7, 2010Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US7914556Dec 20, 2006Mar 29, 2011Gmedelaware 2 LlcArthroplasty revision system and method
US7914560Mar 29, 2011Gmedelaware 2 LlcSpinal facet implant with spherical implant apposition surface and bone bed and methods of use
US7922766Mar 9, 2007Apr 12, 2011Gerraspine A.G.Method for resurfacing a cervical articular facet
US7935134Jun 29, 2006May 3, 2011Exactech, Inc.Systems and methods for stabilization of bone structures
US7955390 *Jun 7, 2011GME Delaware 2 LLCMethod and apparatus for spine joint replacement
US7988712Aug 2, 2011Gerraspine A.G.Method for resurfacing a lumbar articular facet
US7993373Aug 9, 2011Hoy Robert WPolyaxial orthopedic fastening apparatus
US7998172Apr 16, 2009Aug 16, 2011Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US7998175Aug 16, 2011The Board Of Trustees Of The Leland Stanford Junior UniversitySystems and methods for posterior dynamic stabilization of the spine
US7998177Sep 29, 2008Aug 16, 2011Gmedelaware 2 LlcLinked bilateral spinal facet implants and methods of use
US7998178Sep 29, 2008Aug 16, 2011Gmedelaware 2 LlcLinked bilateral spinal facet implants and methods of use
US8025680Sep 27, 2011Exactech, Inc.Systems and methods for posterior dynamic stabilization of the spine
US8062336Dec 19, 2005Nov 22, 2011Gmedelaware 2 LlcPolyaxial orthopedic fastening apparatus with independent locking modes
US8066740Oct 21, 2005Nov 29, 2011Gmedelaware 2 LlcFacet joint prostheses
US8066771Nov 29, 2011Gmedelaware 2 LlcFacet arthroplasty devices and methods
US8070811Dec 6, 2011Gmedelaware 2 LlcFacet arthroplasty devices and methods
US8075595Dec 13, 2011The Board Of Trustees Of The Leland Stanford Junior UniversitySystems and methods for posterior dynamic stabilization of the spine
US8092532Jan 10, 2012Gmedelaware 2 LlcFacet arthroplasty devices and methods
US8096996Jan 17, 2012Exactech, Inc.Rod reducer
US8114158Jul 8, 2008Feb 14, 2012Kspine, Inc.Facet device and method
US8162985Oct 20, 2004Apr 24, 2012The Board Of Trustees Of The Leland Stanford Junior UniversitySystems and methods for posterior dynamic stabilization of the spine
US8163017Apr 24, 2012Gmedelaware 2 LlcFacet arthroplasty devices and methods
US8187303Apr 22, 2004May 29, 2012Gmedelaware 2 LlcAnti-rotation fixation element for spinal prostheses
US8206418Jun 26, 2012Gmedelaware 2 LlcSystem and method for facet joint replacement with detachable coupler
US8211147Jul 3, 2012Gmedelaware 2 LlcSystem and method for facet joint replacement
US8221461Oct 24, 2005Jul 17, 2012Gmedelaware 2 LlcCrossbar spinal prosthesis having a modular design and systems for treating spinal pathologies
US8226690Feb 23, 2006Jul 24, 2012The Board Of Trustees Of The Leland Stanford Junior UniversitySystems and methods for stabilization of bone structures
US8231655Jul 28, 2006Jul 31, 2012Gmedelaware 2 LlcProstheses and methods for replacement of natural facet joints with artificial facet joint surfaces
US8252027Aug 28, 2012Gmedelaware 2 LlcSystem and method for facet joint replacement
US8267969Sep 18, 2012Exactech, Inc.Screw systems and methods for use in stabilization of bone structures
US8308768Aug 29, 2008Nov 13, 2012Gmedelaware 2 LlcSystem and method for facet joint replacement
US8313511Nov 20, 2012Gmedelaware 2 LlcFacet joint replacement
US8333789Apr 17, 2008Dec 18, 2012Gmedelaware 2 LlcFacet joint replacement
US8357182Mar 26, 2009Jan 22, 2013Kspine, Inc.Alignment system with longitudinal support features
US8394142Mar 12, 2013Synthes Usa, LlcCustomizing an intervertebral implant
US8398681Aug 17, 2005Mar 19, 2013Gmedelaware 2 LlcAdjacent level facet arthroplasty devices, spine stabilization systems, and methods
US8409254Jun 27, 2008Apr 2, 2013Gmedelaware 2 LlcProstheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US8419770Jun 2, 2004Apr 16, 2013Gmedelaware 2 LlcSpinal facet implants with mating articulating bearing surface and methods of use
US8425557Apr 23, 2013Gmedelaware 2 LlcCrossbar spinal prosthesis having a modular design and related implantation methods
US8491635Nov 30, 2007Jul 23, 2013Gmedelaware 2 LlcCrossbar spinal prosthesis having a modular design and related implantation methods
US8496686May 7, 2007Jul 30, 2013Gmedelaware 2 LlcMinimally invasive spine restoration systems, devices, methods and kits
US8496687Dec 14, 2007Jul 30, 2013Gmedelaware 2 LlcCrossbar spinal prosthesis having a modular design and related implantation methods
US8523865Jan 16, 2009Sep 3, 2013Exactech, Inc.Tissue splitter
US8523907Jan 3, 2006Sep 3, 2013Gmedelaware 2 LlcProstheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US8529626May 9, 2007Sep 10, 2013Centinel Spine, Inc.Systems and methods for stabilizing a functional spinal unit
US8551142Dec 13, 2010Oct 8, 2013Exactech, Inc.Methods for stabilization of bone structures
US8556936Feb 1, 2007Oct 15, 2013Gmedelaware 2 LlcFacet joint replacement
US8562649Aug 9, 2006Oct 22, 2013Gmedelaware 2 LlcSystem and method for multiple level facet joint arthroplasty and fusion
US8579941Apr 12, 2007Nov 12, 2013Alan ChervitzLinked bilateral spinal facet implants and methods of use
US8652137Feb 21, 2008Feb 18, 2014Spinal Elements, Inc.Vertebral facet joint drill and method of use
US8675930Aug 5, 2008Mar 18, 2014Gmedelaware 2 LlcImplantable orthopedic device component selection instrument and methods
US8696708Mar 5, 2009Apr 15, 2014DePuy Synthes Products, LLCFacet interference screw
US8702755Aug 10, 2007Apr 22, 2014Gmedelaware 2 LlcAngled washer polyaxial connection for dynamic spine prosthesis
US8702759Aug 29, 2008Apr 22, 2014Gmedelaware 2 LlcSystem and method for bone anchorage
US8740942Jan 23, 2013Jun 3, 2014Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US8740949Feb 24, 2011Jun 3, 2014Spinal Elements, Inc.Methods and apparatus for stabilizing bone
US8764801Feb 7, 2006Jul 1, 2014Gmedelaware 2 LlcFacet joint implant crosslinking apparatus and method
US8777994Sep 29, 2008Jul 15, 2014Gmedelaware 2 LlcSystem and method for multiple level facet joint arthroplasty and fusion
US8828058Sep 1, 2010Sep 9, 2014Kspine, Inc.Growth directed vertebral fixation system with distractible connector(s) and apical control
US8858597Dec 3, 2010Oct 14, 2014Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US8882804May 6, 2013Nov 11, 2014Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US8900273Jan 10, 2008Dec 2, 2014Gmedelaware 2 LlcTaper-locking fixation system
US8906063Sep 29, 2008Dec 9, 2014Gmedelaware 2 LlcSpinal facet joint implant
US8920472Apr 18, 2013Dec 30, 2014Kspine, Inc.Spinal correction and secondary stabilization
US8926700Jun 2, 2004Jan 6, 2015Gmedelware 2 LLCSpinal facet joint implant
US8986355Jul 11, 2011Mar 24, 2015DePuy Synthes Products, LLCFacet fusion implant
US8992533Aug 18, 2010Mar 31, 2015Spinal Elements, Inc.Vertebral facet joint drill and method of use
US8998953Aug 30, 2011Apr 7, 2015Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US9011491Jan 9, 2012Apr 21, 2015K Spine, Inc.Facet device and method
US9050144Aug 29, 2008Jun 9, 2015Gmedelaware 2 LlcSystem and method for implant anchorage with anti-rotation features
US9056016Mar 28, 2008Jun 16, 2015Gmedelaware 2 LlcPolyaxial adjustment of facet joint prostheses
US9060787Aug 14, 2012Jun 23, 2015Spinal Elements, Inc.Method of using a vertebral facet joint drill
US9113959Sep 10, 2014Aug 25, 2015K2M, Inc.Spinal correction and secondary stabilization
US9168071Sep 15, 2009Oct 27, 2015K2M, Inc.Growth modulation system
US9173681Dec 20, 2012Nov 3, 2015K2M, Inc.Alignment system with longitudinal support features
US9179943Apr 18, 2014Nov 10, 2015Spinal Elements, Inc.Methods and apparatus for stabilizing bone
US9198766Feb 7, 2008Dec 1, 2015Gmedelaware 2 LlcProstheses, tools, and methods for replacement of natural facet joints with artificial facet joint surfaces
US9271765Feb 23, 2012Mar 1, 2016Spinal Elements, Inc.Vertebral facet joint fusion implant and method for fusion
US9301786Aug 16, 2011Apr 5, 2016Spinal Elements, Inc.Methods and apparatus for stabilizing bone
US20030191532 *Apr 23, 2003Oct 9, 2003Goble E. MarloweFacet joint replacement
US20040006391 *Jul 9, 2003Jan 8, 2004Archus Orthopedics Inc.Facet arthroplasty devices and methods
US20040049273 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet Arthroplasty devices and methods
US20040049276 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049277 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049278 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040049281 *Sep 9, 2003Mar 11, 2004Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20040230201 *May 14, 2003Nov 18, 2004Archus Orthopedics Inc.Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces
US20040230304 *May 14, 2003Nov 18, 2004Archus Orthopedics Inc.Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces
US20050119748 *Oct 25, 2004Jun 2, 2005Reiley Mark A.Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces
US20050131406 *Dec 15, 2003Jun 16, 2005Archus Orthopedics, Inc.Polyaxial adjustment of facet joint prostheses
US20050131409 *Jun 2, 2004Jun 16, 2005Alan ChervitzLinked bilateral spinal facet implants and methods of use
US20050131537 *Jun 2, 2004Jun 16, 2005Hoy Robert W.Spinal facet joint implant
US20050137706 *Sep 23, 2004Jun 23, 2005Reiley Mark A.Facet arthroplasty devices and methods
US20050143818 *Oct 25, 2004Jun 30, 2005Hansen YuanProstheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces
US20050149190 *Sep 23, 2004Jul 7, 2005Reiley Mark A.Facet arthroplasty devices and methods
US20050159746 *Jan 21, 2004Jul 21, 2005Dieter GrobCervical facet resurfacing implant
US20050234552 *Jun 17, 2005Oct 20, 2005Reiley Mark AFacet arthroplasty devices and methods
US20050251256 *Sep 9, 2003Nov 10, 2005Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20050267579 *Aug 3, 2005Dec 1, 2005Reiley Mark AImplantable device for facet joint replacement
US20050283238 *May 27, 2005Dec 22, 2005Reiley Mark AFacet arthroplasty devices and methods
US20060009847 *Sep 9, 2005Jan 12, 2006Reiley Mark AFacet arthroplasty devices and methods
US20060009848 *Sep 9, 2005Jan 12, 2006Reiley Mark AFacet arthroplasty device and methods
US20060052785 *Aug 17, 2005Mar 9, 2006Augostino Teena MAdjacent level facet arthroplasty devices, spine stabilization systems, and methods
US20060058791 *Aug 17, 2005Mar 16, 2006Richard BromanImplantable spinal device revision system
US20060079895 *May 26, 2005Apr 13, 2006Mcleer Thomas JMethods and devices for improved bonding of devices to bone
US20060084982 *Oct 20, 2004Apr 20, 2006The Board Of Trustees Of The Leland Stanford Junior UniversitySystems and methods for posterior dynamic stabilization of the spine
US20060084984 *Dec 6, 2004Apr 20, 2006The Board Of Trustees For The Leland Stanford Junior UniversitySystems and methods for posterior dynamic stabilization of the spine
US20060084987 *Jan 10, 2005Apr 20, 2006Kim Daniel HSystems and methods for posterior dynamic stabilization of the spine
US20060085072 *Sep 26, 2005Apr 20, 2006Archus Orthopedics, Inc.Implantable orthopedic device component selection instrument and methods
US20060085075 *Oct 4, 2005Apr 20, 2006Archus Orthopedics, Inc.Polymeric joint complex and methods of use
US20060100707 *Jan 3, 2006May 11, 2006David StinsonProstheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US20060149375 *Mar 3, 2006Jul 6, 2006Yuan Hansen AProstheses, Tools And Methods For Replacement Of Natural Facet Joints With Artificial Facet Joint Surfaces
US20060184180 *Mar 31, 2006Aug 17, 2006Augostino Teena MFacet Joint Prosthesis Measurement and Implant Tools
US20060200149 *Feb 22, 2005Sep 7, 2006Hoy Robert WPolyaxial orhtopedic fastening apparatus
US20060200156 *Jan 5, 2006Sep 7, 2006Jamal TahaSpinal docking system, spinal docking device, and methods of spinal stabilization
US20060241768 *Apr 25, 2005Oct 26, 2006Sdgi Holdings, Inc.Selectively expandable composite structures for spinal arthroplasty
US20060247769 *Apr 28, 2005Nov 2, 2006Sdgi Holdings, Inc.Polycrystalline diamond compact surfaces on facet arthroplasty devices
US20060265070 *Jul 28, 2006Nov 23, 2006David StinsonProstheses and methods for replacement of natural facet joints with artificial facet joint surfaces
US20060282020 *Jun 13, 2005Dec 14, 2006Rudolph BertagnoliCustomizing an intervertebral implant
US20070016296 *Nov 15, 2004Jan 18, 2007Triplett Daniel JSurgical measurement systems and methods
US20070043359 *Feb 23, 2006Feb 22, 2007Moti AltaracSystems and methods for stabilization of bone structures
US20070088358 *Mar 22, 2006Apr 19, 2007Hansen YuanMinimally Invasive Spine Restoration Systems, Devices, Methods and Kits
US20070093833 *Dec 8, 2006Apr 26, 2007Kuiper Mark KCrossbar spinal prosthesis having a modular design and related implantation methods
US20070100341 *Jun 29, 2006May 3, 2007Reglos Joey CSystems and methods for stabilization of bone structures
US20070167949 *Mar 20, 2007Jul 19, 2007Moti AltaracScrew systems and methods for use in stabilization of bone structures
US20070168029 *Dec 8, 2006Jul 19, 2007Yuan Hansen AProstheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US20070179619 *Mar 9, 2007Aug 2, 2007Gerraspine A.G.Method for resurfacing a cervical articular facet
US20070185492 *Apr 12, 2007Aug 9, 2007Alan ChervitzLinked Bilateral Spinal Facet Implants and Methods of Use
US20070185576 *Apr 12, 2007Aug 9, 2007Goble E MarloweFacet Joint Replacement
US20070233256 *Mar 15, 2007Oct 4, 2007Ohrt John AFacet and disc arthroplasty system and method
US20070239159 *Oct 25, 2006Oct 11, 2007Vertiflex, Inc.Systems and methods for stabilization of bone structures
US20070255411 *May 18, 2007Nov 1, 2007Reiley Mark AFacet arthroplasty devices and methods
US20070276374 *Dec 20, 2006Nov 29, 2007Richard BromanArthroplasty revision system and method
US20070282445 *Aug 15, 2007Dec 6, 2007Reiley Mark AFacet arthroplasty devices and methods
US20080015696 *Jun 29, 2007Jan 17, 2008Reiley Mark AFacet arthroplasty devices and methods
US20080082171 *Apr 25, 2007Apr 3, 2008Kuiper Mark KCrossbar spinal prosthesis having a modular design and systems for treating spinal pathologies
US20080086213 *Nov 20, 2007Apr 10, 2008Reiley Mark AFacet arthroplasty devices and methods
US20080091200 *Nov 30, 2007Apr 17, 2008Kuiper Mark KCrossbar spinal prosthesis having a modular design and related implantation methods
US20080091202 *Dec 14, 2007Apr 17, 2008Reiley Mark AFacet Arthroplasty Devices and Methods
US20080091204 *Nov 30, 2007Apr 17, 2008Kuiper Mark KCrossbar spinal prosthesis having a modular design and related implantation methods
US20080091205 *Dec 14, 2007Apr 17, 2008Kuiper Mark KCrossbar Spinal Prosthesis Having a Modular Design and Related Implantation Methods
US20080091210 *Nov 2, 2007Apr 17, 2008Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20080091268 *Nov 13, 2007Apr 17, 2008Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20080097437 *Nov 30, 2007Apr 24, 2008Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20080097438 *Dec 14, 2007Apr 24, 2008Reiley Mark AFacet Arthroplasty Devices and Methods
US20080097439 *Dec 14, 2007Apr 24, 2008Reiley Mark AFacet Arthroplasty Devices and Methods
US20080097440 *Dec 14, 2007Apr 24, 2008Reiley Mark AProstheses, Systems and Methods for Replacement of Natural Facet Joints With Artificial Facet Joint Surfaces
US20080097446 *Dec 14, 2007Apr 24, 2008Reiley Mark AProstheses, Systems and Methods for Replacement of Natural Facet Joints With Artificial Facet Joint Surfaces
US20080097609 *Nov 30, 2007Apr 24, 2008Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20080097612 *Dec 14, 2007Apr 24, 2008Reiley Mark AFacet Arthroplasty Devices and Methods
US20080097613 *Dec 14, 2007Apr 24, 2008Reiley Mark AProstheses, Systems and Methods for Replacement of Natural Facet Joints With Artificial Facet Joint Surfaces
US20080103501 *Aug 10, 2007May 1, 2008Ralph Christopher RAngled Washer Polyaxial Connection for Dynamic Spine Prosthesis
US20080125814 *Feb 7, 2008May 29, 2008Archus Orthopedics, Inc.Prostheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces
US20080140121 *Dec 7, 2007Jun 12, 2008Archus Orthopedics, Inc.Polymeric joint complex and methods of use
US20080161856 *Oct 6, 2006Jul 3, 2008Mingyan LiuSpinal stabilization system
US20080167688 *Jan 10, 2008Jul 10, 2008Facet Solutions, Inc.Taper-Locking Fixation System
US20080177309 *Nov 2, 2007Jul 24, 2008Archus Orthopedics, Inc.Polymeric joint complex and methods of use
US20080177310 *Jan 17, 2008Jul 24, 2008Archus Orthopedics, Inc.Facet arthroplasty devices and methods
US20080177332 *Mar 28, 2008Jul 24, 2008Archus Orthopedics, Inc.Polyaxial adjustment of facet joint prostheses
US20080200953 *Oct 21, 2005Aug 21, 2008Reiley Mark AFacet Joint Prostheses
US20080208249 *Feb 21, 2008Aug 28, 2008Jason BlainVertebral facet joint drill and method of use
US20080221622 *Apr 17, 2008Sep 11, 2008Facet Solutions, Inc.Facet Joint Replacement
US20080275505 *Jun 27, 2008Nov 6, 2008Hansen YuanProstheses, Tools and Methods for Replacement of Natural Facet Joints With Artificial Facet Joint Surfaces
US20080292161 *Aug 5, 2008Nov 27, 2008Funk Michael JImplantable orthopedic device component selection instrument and methods
US20080319488 *Aug 29, 2008Dec 25, 2008Facet Solutions, Inc.System and method for facet joint replacement
US20090018585 *Jul 18, 2008Jan 15, 2009Reiley Mark AFacet arthroplasty devices and methods
US20090024134 *Sep 29, 2008Jan 22, 2009Facet Solutions, Inc.Surgical measurement and resection framework
US20090024135 *Sep 29, 2008Jan 22, 2009Facet Solutions, Inc.Surgical measurement systems and methods
US20090024167 *Sep 29, 2008Jan 22, 2009Facet Solutions, Inc.Spinal facet implants with mating articulating bearing surface and methods of use
US20090024168 *Sep 29, 2008Jan 22, 2009Facet Solutions, Inc.Linked bilateral spinal facet implants and methods of use
US20090024169 *Sep 29, 2008Jan 22, 2009Facet Solutions, Inc.System and method for multiple level facet joint arthroplasty and fusion
US20090024219 *Nov 2, 2007Jan 22, 2009Archus Orthopedics, Inc.Polymeric joint complex and methods of use
US20090030459 *Sep 29, 2008Jan 29, 2009Facet Solutions, Inc.Spinal facet implant with spherical implant apposition surface and bone bed and methods of use
US20090030461 *Sep 29, 2008Jan 29, 2009Facet Solutions, Inc.Spinal Facet Joint Implant
US20090066845 *May 10, 2006Mar 12, 2009Takao OkudaContent Processing Apparatus, Method of Processing Content, and Computer Program
US20090125066 *Dec 22, 2008May 14, 2009Gary KrausFacet stabilization schemes
US20090204152 *Apr 16, 2009Aug 13, 2009Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US20100087880 *Apr 8, 2010Facet Solutions, Inc.Facet Joint Replacement Instruments and Methods
US20100249836 *Sep 30, 2010Kspine, Inc.Alignment system with longitudinal support features
US20110004247 *Mar 5, 2009Jan 6, 2011Beat LechmannFacet interference screw
US20110040301 *Feb 17, 2011Spinal Elements, Inc.Vertebral facet joint drill and method of use
US20110082503 *Dec 3, 2010Apr 7, 2011Spinal Elements, Inc.Vertebral facet joint prosthesis and method of fixation
US20110144701 *Dec 13, 2010Jun 16, 2011Exactech, Inc.Methods for stabilization of bone structures
US20110313462 *Jun 16, 2010Dec 22, 2011Neville AlleyneControl of innate systems to remodel spinal canal cross-sectional area
US20120071923 *Sep 6, 2011Mar 22, 2012Mi4Spine, LlcMinimally invasive vertebral laminar reconstructive plate
US20120071931 *Sep 6, 2011Mar 22, 2012Mi4Spine, LlcMethod for surgically attaching a vertebral laminar reconstructive plate
USD724733Oct 26, 2011Mar 17, 2015Spinal Elements, Inc.Interbody bone implant
USD748262Jan 23, 2015Jan 26, 2016Spinal Elements, Inc.Interbody bone implant
USD748793Jan 23, 2015Feb 2, 2016Spinal Elements, Inc.Interbody bone implant
EP1863412A2 *Mar 27, 2006Dec 12, 2007Facet Solutions, Inc.Facet joint implant crosslinking apparatus and method
EP1863412A4 *Mar 27, 2006Jan 4, 2012Facet Solutions IncFacet joint implant crosslinking apparatus and method
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