WO1993005729A3 - Total knee endoprosthesis with fixed flexion-extension axis - Google Patents

Total knee endoprosthesis with fixed flexion-extension axis Download PDF

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Publication number
WO1993005729A3
WO1993005729A3 PCT/US1991/008451 US9108451W WO9305729A3 WO 1993005729 A3 WO1993005729 A3 WO 1993005729A3 US 9108451 W US9108451 W US 9108451W WO 9305729 A3 WO9305729 A3 WO 9305729A3
Authority
WO
WIPO (PCT)
Prior art keywords
flexion
extension axis
extension
total knee
endoprosthesis
Prior art date
Application number
PCT/US1991/008451
Other languages
French (fr)
Other versions
WO1993005729A2 (en
Inventor
Anne Hollister
Original Assignee
Res & Education Inst Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Res & Education Inst Inc filed Critical Res & Education Inst Inc
Priority to JP4506146A priority Critical patent/JP2654249B2/en
Priority to EP92906251A priority patent/EP0678011A1/en
Publication of WO1993005729A2 publication Critical patent/WO1993005729A2/en
Publication of WO1993005729A3 publication Critical patent/WO1993005729A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A61F2/3877—Patellae or trochleae

Abstract

The invention is a total knee endoprosthesis with a fixed flexion-extension axis (FE) throughout all degrees of flexion and extension of the knee. The endoprosthesis has a femoral component (20) with spaced apart medial and lateral condyle portions (21, 22) which slidably seat on a tibial implant portion (24). The fixed flexion-extension axis (FE) is directed inferiorly and posteriorly from the medial condyle portion (21) to the lateral condyle portion (22) and is offset from both the transverse and coronal planes equally by 3.0 to 3.8 degrees. A longitudinal axis (LR) through the tibia (3) allows the tibia (3) to rotate nonorthogonally and anteriorly of the flexion-extension axis (FE). A patellar groove (23) is perpendicular to the flexion-extension axis (FE). In the patellar groove (23) slides an optional patellar component (30) or the natural patella (36).
PCT/US1991/008451 1991-09-16 1991-11-12 Total knee endoprosthesis with fixed flexion-extension axis WO1993005729A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4506146A JP2654249B2 (en) 1991-09-16 1991-11-12 Total knee prosthesis with fixed rotation axis
EP92906251A EP0678011A1 (en) 1991-09-16 1991-11-12 Total knee endoprosthesis with fixed flexion-extension axis of rotation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/760,115 US5133758A (en) 1991-09-16 1991-09-16 Total knee endoprosthesis with fixed flexion-extension axis of rotation
US760,115 1991-09-16

Publications (2)

Publication Number Publication Date
WO1993005729A2 WO1993005729A2 (en) 1993-04-01
WO1993005729A3 true WO1993005729A3 (en) 1993-06-24

Family

ID=25058141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/008451 WO1993005729A2 (en) 1991-09-16 1991-11-12 Total knee endoprosthesis with fixed flexion-extension axis

Country Status (6)

Country Link
US (2) US5133758A (en)
EP (1) EP0678011A1 (en)
JP (1) JP2654249B2 (en)
AU (1) AU1336992A (en)
CA (1) CA2119016C (en)
WO (1) WO1993005729A2 (en)

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US5047057A (en) * 1988-07-27 1991-09-10 Peter Lawes Tibial component for a replacement knee prosthesis
US5071438A (en) * 1990-11-07 1991-12-10 Intermedics Orthopedics, Inc. Tibial prothesis with pivoting articulating surface

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US5326361A (en) 1994-07-05
CA2119016C (en) 1998-09-15
WO1993005729A2 (en) 1993-04-01
AU1336992A (en) 1993-04-27
US5133758A (en) 1992-07-28
CA2119016A1 (en) 1993-04-01
EP0678011A4 (en) 1994-11-28
JPH07503147A (en) 1995-04-06
EP0678011A1 (en) 1995-10-25
JP2654249B2 (en) 1997-09-17

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