Biomet Manufacturing Corporation

Curt Collard

Robert G Metzger

Brian M May

Larabeth G Ryan

Michael John Collins

A knee prosthesis including a knee component and an indexing boss. The knee component includes a first engagement portion. The indexing boss includes a first terminal end surface, a second terminal end surface, and a second engagement portion at the second terminal end surface. The first terminal end surface and the second terminal end surface are arranged along non-parallel planes. The first and the second engagement portions are configured to selectively couple together at a plurality of rotational orientations to attain a corresponding plurality of angular orientations of the indexing boss relative to the knee component due to the first and the second terminal end surfaces being arranged along non-parallel planes.

Knee component having orbital interface boss

A knee prosthesis constructed in accordance to the present disclosure includes a femoral component and a boss. The femoral component can have a first condylar portion and a second condylar portion connected by an inner condylar portion that defines an intercondylar recess, the inner condylar portion having a first engagement portion comprising a first plurality of engaging members extending therefrom. The boss can have a longitudinal body extending along a boss axis between first and second ends. The first end can be configured to selectively mate with a stem. The second end can include a second engagement portion comprising a second plurality of engaging members extending therefrom. The second engagement portion of the boss can be selectively coupled to the first engagement portion of the femoral component in a plurality of discrete positions to attain a corresponding plurality of angles of the boss axis relative to the femoral component.

A prosthesis for replacing a knee joint between a femur and a tibia can include a femoral component, a tibial component, a bearing and a yoke assembly. The yoke assembly can have a yoke disposed between the bearing and the femoral component and an axle having an axle axis. The axle can hingedly couple the yoke with the femoral component. Rotation of the femoral component about a rotation axis that is perpendicular to the axle axis causes concurrent rotation of the yoke about the rotation axis.

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Warsaw, IN, United States of America

Curt Collard