1980-02-13
1982-05-11
Crowder, Clifford D.
3 61, A61F 108
Patent
active
043285945
ABSTRACT:
A prosthetic foot includes an elongated one-piece semi-rigid keel having a half dome-shaped arch and a thinned toe break region. A rigid bolt block, with a lower portion of reduced size to accommodate a cushioned heel, is fastened to the posterior end of the keel. To rigidify the foot during toe-off, a first substantially inelastic strap is provided. This first strap is fastened at one end to the bolt block, extends across a lower region of the arch, and is fastened at its opposite end to the keel forwardly of the toe break region. A second substantially inelastic strap is positioned above the first strap and is fastened at one end to the bolt block, extends across a mid-portion of the arch, and has its other end fastened to the keel between the arch and toe break region. This second strap rigidifies the foot when in a foot flat position. A flexible foot-shaped cover layer generally envelopes the two straps, keel and bolt block, fills in the toe break region and a large portion of the arch. Also, the cover layer is thickened adjacent to the reduced portion of the heel block to provide a cushioned heel for the foot.
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Campbell John W.
Childs Charles W.
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