Patent ID: 6939380

Claim:
An ankle prosthesis, comprising: an upper talar component including (i) a superior side having a first bearing surface, and (ii) an inferior side having an inferior surface, and (iii) a recess defined by an interior recess surface, said recess being accessible through an opening defined in said inferior surface; a lower talar component including (i) a superior side defining a superior surface, (ii) a projection extending from said superior surface, and (ii) an inferior side configured to be attached to a talus; and a tibial device having (i) a superior side configured to be attached to a tibia, and (ii) an inferior side having a second bearing surface supported on said first bearing surface of said upper talar component; wherein said upper talar component is pivotable in relation to said lower talar component, wherein said interior recess surface of said upper talar component is supported on said projection of said lower talar component during pivoting of said upper talar component in relation to said lower talar component, and wherein said inferior surface of said upper talar component is spaced apart from superior surface of said lower talar component during pivoting of said upper talar component in relation to said lower talar component.