| 摘要 |
The present invention provides a prosthetic foot comprising an integrally formed, flexible keel preferably in a cosmetic covering. The keel has a forefoot portion and a heel portion joined by an ankle portion. The inferior aspect of the ankle portion defines an arch which expands in response to a load, and the superior aspect of the ankle portion forms a platform which engages a conventional leg assembly. The forefoot portion is contoured, thicker on the medial side than on the lateral side, which shifts the midline of weight distribution in the forefoot portion medially. This provides a more natural alignment of the foot during the gait cycle. The toe end of the forefoot portion is biased along the natural toe break line. The posterior aspect of the ankle portion defines a concavity under the platform which is continuous with the superior aspect of the heel portion. A horizontal slot continuous with the concavity extends from the posterior aspect of the ankle portion between the platform and the arch. The anterior end of the slot is enlarged and rounded. Thus, the length of the heel is increased. This enhances the flexibility and shock absorbing capacity of the keel. The cosmetic covering is solid except for a cavity under the arch.
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