Artificial knee joint
AssigneeNakashima Propeller Co., Ltd.
InventorsToru Suguro, Koichi Kuramoto, Keitaro Yamamoto
Life of this patent
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Abstract
An artificial knee joint including a femoral component to be attached to a femur and a tibial component to be attached to a tibia, wherein in the femur component a medial condyle thereof is thicker than a lateral condyle thereof; in the tibial component, a medial articular surface thereof, which supports the medial condyle, is thinner than a lateral articular surface thereof, which supports the lateral condyle; and a joint line joining lowest points of contact surfaces between the medial and lateral condyles and the medial and lateral articular surfaces in a longitudinal cross section in a medial-lateral direction is inclined inward at virtually the same angle over the entire region of an angle of flexion-extension.
Claims5
An artificial knee joint comprising a femoral component to be attached to a femur and a tibial component to be attached to a tibia, wherein
- in the femur component a medial condyle thereof is made thicker than a lateral condyle thereof;
- in the tibial component, a medial articular surface thereof, which supports the medial condyle, is made thinner than a lateral articular surface thereof, which supports the lateral condyle;
- and
- a joint line joining lowest points of contact surfaces between the medial and lateral condyles and the medial and lateral articular surfaces in a longitudinal cross section in a medial-lateral direction is inclined inward at virtually the same angle over the entire region of an angle of flexion-extension.
Dependencies are inferred from the claim text.