Implantable component with improved anchoring means for ankle prosthesis and ankle prosthesis comprising such a component

An implantable ankle-prosthesis component (1), said component (1) comprising a main body (2) provided with a bone contact face (3) that is intended to be arranged in contact with an area of a bone body (Ti, Ta) of an ankle and that extends along a median contact plane (Pc), said component (1) comprising at least one anchoring means (4) that protrudes from said bone contact face (3) to anchor said component (1) into said bone body (Ti, Ta), said component (1) being characterized in that said anchoring means (4) comprises two pairs (20A, 20B) of anchoring wings (21A, 22A, 21B, 22B), which each extend in a plane (P1, P2), respectively, orthogonal to said median contact plane (Pc) of the bone contact face (3) between a first end (23A, 23B) connected to said bone contact face (3) and an opposite second end (24A, 24B), said respective planes of extension (P1, P2) of the pairs (20A, 20B) of anchoring wings (21A, 22A, 21B, 22B) intersecting each other, said second ends (24A, 24B) of the pairs (20A, 20B) of anchoring wings (21A, 22A, 21B, 22B) being inscribed in a leading plane (Pa) inclined with respect to said median contact plane (Pc).