Joint prostheses

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/30 (2006.01) A61F 2/32 (2006.01) A61F 2/38 (2006.01) A61F 2/40 (2006.01) A61F 2/42 (2006.01) A61F 2/44 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2712060

The present invention provides an implantable joint prosthesis configured to replace a natural joint, and methods for implantation. The prosthesis may include a first component implantable in a first bone, having a first bearing surface, and a second component implantable in a second bone, having a second bearing surface which corresponds to the first bearing surface. Each bearing surface may include a flattened section such that when the bearing surfaces are placed in cooperation with one another in a preferred orientation, the flattened sections are aligned. Alternatively, the bearing surfaces may have and asymmetric configuration, with non-congruent surfaces that may enable correction of deformity. Several types of implantable joint prostheses are disclosed, including: carpometacarpal, metacarpophalangeal, metatarsophalangeal, distal interphalangeal, proximal interphalangeal, ankle, knee, shoulder, and hip.

La présente invention porte sur une prothèse articulaire implantable configurée pour remplacer une articulation naturelle, et sur des procédés d'implantation. La prothèse peut comprendre un premier composant implantable dans un premier os, ayant une première surface de support, et un second composant implantable dans un second os, ayant une seconde surface de support qui correspond à la première surface de support. Chaque surface de support peut comprendre une section aplatie de telle sorte que lorsque les surfaces de support sont placées en coopération l'une avec l'autre dans une orientation privilégiée, les sections aplaties sont alignées. En variante, les surfaces de support peuvent avoir une configuration asymétrique, avec des surfaces non congruentes qui peuvent permettre la correction d'une déformation. Plusieurs types de prothèses articulaires implantables sont décrits, comprenant : des prothèses carpométacarpiennes, métacarpophalangiennes, métatarsophalangiennes, interphalangiennes distales, interphalangiennes proximales, de la cheville, du genou, de l'épaule et de la hanche.

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