Femoral neck prosthesis

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/36 (2006.01)

Patent

CA 2609424

The invention relates to a shaft for a femoral neck prosthesis, which comprises an anchoring area (27, 29) which is arranged inside the femur in order to anchor the prosthesis into bone, a head area which is axially adjacent to the anchoring area (27, 29) on the proximal side, said head area comprising a device (13) which is connected to the prosthesis head (15), in addition to a distal end which is arranged opposite the head area in the axial direction of the anchoring area (27, 29). The invention is characterised in that the maximum cross-sectional dimension of the head area is at the most equal and, in particular, smaller than the maximum diameter of the anchoring area (27, 29), in such a manner that the maximum cross-sectional dimension of the shaft (11) is in the anchoring area (27, 29).

L'invention concerne une tige destinée à une prothèse du col du fémur. Cette tige comprend une région d'ancrage (27, 29) à placer à l'intérieur du fémur pour ancrer la prothèse dans l'os, une région de tête adjacente axialement à la zone d'ancrage (27, 29) au niveau d'un côté proximal, cette région de tête présentant un dispositif (13) à raccorder à une tête de prothèse (15), ainsi qu'une extrémité distale placée à l'opposé de la région de tête dans le sens axial de la région d'ancrage (27, 29). L'invention se caractérise en ce que la dimension maximale de la région de tête en coupe transversale est au maximum égale et en particulier inférieure à un diamètre maximal de la région d'ancrage (27, 29) de sorte que la dimension maximale de la tige (11) en coupe transversale se trouve dans la région d'ancrage (27, 29).

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