Patent ID: 7534270
Filing Date: 2009-05-19
Classification: A61F

Abstract:
1. An ankle prosthesis system comprising: a. a talar component having a lower surface having a bone fixation portion for fixation to a talus bone, and the talar component having an upper surface; b. a tibial component having an upper surface having a bone fixation portion for fixation of the tibial component to a tibia bone and/or a fibula bone, and the tibial component also having a lower surface having at least one protrusion extending from the lower surface; c. a plurality of bearing components for placement between the tibial and talar components, each bearing component having a lower surface for cooperative sliding engagement with the upper surface of the talar component, each bearing component also having an upper surface defining a recess, and wherein each recess is adapted for engagement with the protrusion and each recess is of a different shape to desirably and differently limit rotational and translational movement of the tibial component relative to the bearing component depending upon the bearing component utilized.