| 摘要 |
The invention provides an improved prosthetic toe joint (10) adapted for replacement of a human toe joint which includes at least one one-piece member (12) for implantation into the bone of the joint. The implant has a concave articulating surface (30) which articulates against another one-piece component having a mating convex surface (54) or against a mating convex bone surface. This one part component is provided with a flexible hinge section (24) at the junction of its stem (16) and the enlarged head portions (18). The hinge section is formed from a section of the stem (16) which extends laterally outwardly on both sides of the stem portion adjacent the junction with the head. The laterally enlarged section (24) is provided with a longitudinal channel (26) extending through its midsection to form a hinge. Each of the one-piece components (14) is preferably molded of a flexible elastomeric, physiologically inert material, for example, medical grade silicone rubber. |
