Joint prosthesis and method of bone fixation

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/30 (2006.01) A61B 17/84 (2006.01) A61F 2/40 (2006.01)

Patent

CA 2577404

The invention relates to a joint prosthesis (10), for example, a knee joint or shoulder joint prosthesis comprising a first, socket-holding prosthesis part (11) for attachment to a first bone (12) and a second, ball-holding prosthesis part (13) for attachment to a second bone (14) that intermates with the first prosthesis part, wherein the first bone and the second bone are situated at either side of a joint, and wherein the ball (2) of the second prosthesis part is rotatably received in the socket (5) of the first prosthesis part, wherein the first pros~thesis part can be coupled with the first bone by applying tensile strain bearing rods (6), wherein when the mounted pros~thesis is in a virtually unloaded condition, there is no significant tensile force in the rods.

Cette invention concerne une prothèse articulaire (10), par exemple une prothèse articulaire du genou ou de l'épaule, qui comprend: une première pièce prothétique de retenue de l'emboîture (11) destinée à se fixer à un premier os (12), et une seconde pièce prothétique de retenue de la rotule (13), formant un intercroisement avec la première pièce, destinée à se fixer à un second os (14). Le premier os et le second os sont situés de part et d'autre d'une articulation, et la rotule (2) de la seconde pièce prothétique est logée de manière rotative dans l'emboîture (5) de la première pièce prothétique. La première pièce prothétique peut être couplée au premier os par l'installation de tiges porteuses de contrainte de traction (6). Lorsque la prothèse montée se trouve dans un état virtuellement libre, aucun effort de traction significatif ne s'exerce sur les tiges.

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