Four compartment knee

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/38 (2006.01)

Patent

CA 2629274

A femoral knee implant includes a fourth compartment of articulation. The superior posterior articulating surface is achieved by first increasing the thickness of the superior posterior condylar portion of the femoral component to widen the superior posterior edge of the posterior condyle. Second, the newly created surface at the superior posterior condyle is smoothly rounded to provide an articular surface with no sharp changes in the surface contours. In one embodiment, the fourth articular compartment of this invention is provided in a one piece femoral design. In another embodiment, it is provided as a modular addition to an existing prior art femoral component. In another embodiment, the fourth compartment is combined with a posterior stabilized (PS) TKR design that includes a tibial post and cooperating femoral cam characterized by low engagement of the cam on the spine.

Implant pour genou fémoral qui comprend un quatrième compartiment d'articulation. La surface d'articulation postérieure supérieure est obtenue, premièrement, en augmentant l'épaisseur de la partie de condyle postérieure supérieure de la pièce fémorale supérieure afin d'élargir le bord postérieur supérieur du condyle postérieur. Deuxièmement, la surface nouvellement créée au niveau de la condyle postérieure est arrondie avec souplesse de manière à former une surface articulaire, sans aucune modification abrupte dans les contours de la surface. Dans un mode de réalisation, le quatrième compartiment articulaire de cette invention est prévu en tant que conception fémorale d'une pièce. Dans un autre mode de réalisation, il est prévu en tant qu'addition modulaire à un composant fémoral existant. Dans un autre mode de réalisation, le quatrième compartiment est combiné à une conception TKR stabilisée postérieure (PS) qui comprend un montant tibial et une came fémorale coopérante caractérisée par un faible contact de la came sur la colonne vertébrale .

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