Femoral head resurfacing

Details Femoral head resurfacing Femoral head resurfacing

A - Human Necessities

61

F

A61F 2/32 (2006.01) A61F 2/36 (2006.01) A61L 27/04 (2006.01) A61L 27/06 (2006.01) A61L 27/30 (2006.01) A61L 27/56 (2006.01)

Patent

CA 2588523

A hip resurfacing femoral prosthesis has a partial ball component having an outer surface shaped to conform to an acetabular socket and has a mating sleeve component with an internal bore adapted to receive a femoral head. The head has been shaped and dimensioned to engage the bore and is retained by bone ingrowth, an interference fit or by bone cement. The ball component and sleeve axes may be offset to reposition the outer surface.

L'invention porte sur une prothèse de resurfaçage de hanche. Cette prothèse est constituée d'une sphère partielle présentant une surface externe dont la conformation s'adapte à une cupule acétabulaire et d'un manchon concentrique muni d'un alésage adapté à la tête de fémur. La tête a été modelée afin de pénétrer dans l'alésage et est retenue par l'os en croissance, un ajustage serré ou un ciment osseux. L'axe de la sphère et celui du manchon peuvent être modifiés afin de repositionner la surface externe.

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