Knee arthroplasty prosthesis and method

A - Human Necessities – 61 – F

Patent

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A61F 2/38 (2006.01)

Patent

CA 2475078

A knee prosthesis (10) of two of more pieces including a patellar femoral flange piece (41) and a condylar piece (42) is disclosed. The patellar femoral flange piece (41) has a patellar engaging surface (43) shaped to allow anatomical tracking of a natural prosthetic patella (2). The patellar femoral flange piece (41) has a superior bone engaging surface (46) and a patellar engaging surface (43) defining a portion of an inferior articulating surface. The use of multiple pieces reduces the size of the incision needed for implantation and allows assembly of the implant within the body.

L'invention concerne une prothèse du genou (10) constituée de deux ou plusieurs pièces pour rebord fémoro-patellaire (41) et d'une pièce condylienne (42). La pièce pour rebord fémoro-patellaire (41) présente une surface d'accrochage patellaire (43) formée de manière à permettre le repérage anatomique d'une patella prothétique naturelle (2). La pièce pour rebord fémoro-patellaire (41) présente une surface supérieure d'accrochage avec l'os (46) et une surface d'accrochage patellaire (43) délimitant une partie de la surface d'articulation inférieure. L'utilisation de plusieurs pièces réduit la taille de l'incision requise pour l'implantation et permet d'assembler la prothèse à l'intérieur du corps.

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