IMPROVED ANKLE PROSTHESIS

The present invention relates to a sacral prosthesis (100) comprising a talar component (200) which comprises a talar top (201) defining a first joint surface (202) and extending between a talar anterior edge (203) and an opposite talar posterior edge (204) along a first average direction; the first joint surface (202) is curved in the first average direction; the first joint surface (202) includes a first curved portion (202A) and a second curved portion (202B) each extending along the first average direction; the first curved portion (202A) has a first curvature, and the second curved portion (202B) has a second curvature; the prosthesis (100) is characterized in that the first curved portion (202A) and the second curved portion (202B) define a front portion and a rear portion of the first joint surface (202), respectively. The first curvature is greater than the second curvature. 本发明涉及种踝假体(100)，包括距骨部件(200)，其包括限定第关节表面(202)的距骨上面(201)，并且其沿第平均方向在距骨前边缘(203)与相对的距骨后边缘(204)之间延伸，所述第关节表面(202)沿所述第平均方向弯曲，所述第关节表面(202)包