Knee surface replacement prosthesis

Details Knee surface replacement prosthesis Knee surface replacement prosthesis

A - Human Necessities

61

F

A61F 2/38 (2006.01)

Patent

CA 2245968

The invention relates to knee surface replacement prosthesis comprising a femoral component (1) provided with lock pins and a plastic tibial component (2) placed in a metal tray (3) fixed to the tibia by means of a pin or a screw. The knee surface replacement prosthesis is characterized in that the external surface of its femoral component (1) having a movement determined by their conical surfaces is formed in accordance with its logarithmic spiral generatrix (4) while its internal surface corresponds to the conical spiral generatrix (5).

Prothèse pour la remplacement d'une surface de l'articulation du genou, comportant un élément fémoral (1) pourvu d'ergots de blocage, et un élément tibial (2) en matière plastique placé dans un plateau métallique (3) fixé au tibia au moyen d'un ergot ou d'une vis. Cette prothèse est caractérisée en ce que la face externe de son élément fémoral (1), dont le déplacement est déterminé par les surfaces coniques, est formée selon sa génératrice de spirale logarithmique (4), tandis que sa face interne correspond à la génératrice de spirale conique (5)

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