Patent ID: 8034114
Filing Date: 2011-10-11
Classification: A61B,A61F

Abstract:
1. A prosthesis, comprising: a tibial stem having a cylindrical body, the tibial stem having a sufficient length such that an end projects from an end of a tibia when the tibial stem is disposed within an intradmedullary channel formed in the tibia; a first dome having a substantially flat inner surface and a concave outer surface forming an articulating joint surface, the substantially flat inner surface defining an aperture configured to be engaged by the end of the tibial stem; a sleeve defining an opening having a diameter sufficient to slidably receive the tibial stem therein, the sleeve having at least one anti-rotational feature extending from an exterior surface; a plate having a first portion defining an aperture and configured to be coupled to a planar surface formed on a top of a talus, the plate including an overhang extending from the first portion of the plate at angle such that the overhang extends from a top of the talus to overlap at least a portion of a calcaneus when the first portion of the plate is coupled to the planar surface formed on the top of the talus; a talo-calcaneal stem having a cylindrical body having a length sufficient to extend from the top of the talus into the calcaneus such that an end of the talo-calcaneal stem projects at an angle from the body through the aperture in the plate and to a position exterior to the talus when the talo-calcaneal stem is disposed in an intramedullary channel formed through the talus and calcaneus; and a second dome having an upper surface and a substantially flat lower surface, the upper surface having a convex surface configured to form a complementary articulating joint surface with the concave outer surface of the first dome, the lower surface defining an aperture having a diameter sufficient to receive the end of the talo-calcaneal therein.