US 1997504 A
Description (OCR text may contain errors)
April 9, 1935.
w. WISBRUN 1,997,504
FOOT SUPPORT Filed Sept. 20, 1955 lnvcni'or Patented Apr. 9, 1935 In Germany Jnlyi'31; 1933 Claims. (CI. 36-71) The erroneous assumption has been startedfrom a concept that the cross-section through the metatarsal bone caps corresponded to a transverse arch and it has consequently been attempted to support this transverse arch by hump-like elevations on the front end of the foot plate or insertion. I
Experience has, however, shown that it is exactly the shape and position of the five metatarsal bones, which, behind their joint caps, form downwardly concave arcs and together form an almost straight and forwardly directed bulge, that must be taken into consideration in theconstruction of the foot plate at its front edge.
This point of view is taken into'account by the improved foot support which thereby reliably relieves pain due to front-foot or splay-foot or prevents its occurrence. It is characterized by the convexly arched foot plate, which affords a carrying support to the foot at its frontally directed apex line located under the front end of the heel bone, having at its front edge a strip running almost straight and bent downwards,.which By this combination of the support under the front end of the heel bone by the foot platewith the support by the turned-over strip at the front edge of the foot plate which corresponds to the 40 bulging out of the metatarsal bones behind the joint caps, the result is attained that the foot obtains in a novel manner a support corresponding to the shape of its longitudinal arch, which has hitherto not been the case. A drooping and dropping of the front of the foot, is hereby simultaneously corrected or avoided.
In this supporting of the longitudinal arch, however, lies the superiority of theimproved foot support as compared with previous ones.
An embodiment of the improvedfoot support is shown as an example in the accompanying drawing.
. Fig. 1 shows the foot support on a foot, in elevation.
pressions or plaster the attachment of elevations forms with the frontal axis an angle of -2 0.
twisting over of the bones of the foot, as also-a Fig. 2 is a bottom view correspondingto Fig. 1. Fig. 3 is a vertical section'on the line A-B of Fig. 1. V
The foot support consis s of the convex foot plate I adapted to the arch of the foot, and the 5 highest point of which is located as a frontally directed apex line 2 under the front end of the heel bone 3. The front part of this footplate carries a frontal, strip-like, bent-over part 4 corresponding to the bent-out shape of the metatarsal bones, 5 behind their joint caps 65. The angle which this turned-over strip 4 forms with the frontal axis amounts to about 15-20. In this way, the result is attained that the foot is supported in the direction of its longitudinal arch by the apex line 2 at the end of the heel bone 3 and behind the joint caps 6 of the metatarsal bones 5 by the turned down strip 4.
This form of construction is adapted both to the making of individual insertions after stamp imcasts as also for fitting into orthopaedic boots. In order with these-latter'to ensure an'individual support, provisions are made i on the supports fittedinto the boot which permit of all kinds. Such elevations may be: an elevation under the front end of the heel bone, an inner elevation and an outer elevation according to whether the foot is inclinedto tread the boot at an inclination'towards the inside or towards the outside, and, finally, an elevation on thefront part, in particular the turned-down edge strip.
Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that whatI claim is 2- i 1. A foot support consisting of a stiff plate having a substantially flat central portion, a rear portion extending at a slight angle downwardly from the rear end of the central portion and terminating in a rear edge portion extending downwardly at an angle from the rear edge of the rear portion, and a front portion extending downwardly at an angle to the central portion from the 4 front edge of saidcentral portion.
, 2. A foot support consisting of a stiff plate having a substantially fiat central portion, a rear portion extending at a slight angle downwardly from the rear end of the central portion and terminating in a rear edge portion extending downwardly at an angle from the rear edge of the rear portion, and a front portion extending downwardly at an angle to. the central portion from the front edge of said central portion, said front portion and the front edge of the central portion being positioned at 15 to 20inclination to a line parallel to a transverse axis of the plate.
30A foot support Consisting of a stiif plate having a substantially straight central portion, a portion adjoining the straight portion at the rear end of the plate.
4. Afoot support consisting of a stifi plate haying a substantially straightcentral portion, a portion adjointing the straight portion at the rear extending downwardly at an obtuse angle to the central portion, the last mentioned portion hav J ing an extremity extending downwardly therefrom at an angle more acute than the angle between the straight portion and the said adjoining portion thereof, and a portion at the front of the central portion extending diagonally downwardly and longitudinally of the central portion.
5. A foot support consisting of a stiff plate having a substantially flat central portion and a por-' tion adjoining the rear of the .central'portion, the
second mentioned portion extending downwardly at an obtuse angle for a portion of its length and terminating in an extremity extending downwardly' at an acute angle as compared with the angle of divergence of the second mentioned portion with respect to the central portion of and a'support for the front end of the plate.
' WALTER WISBRUN.
the plate, 15