Patent ID: 7387644

Claim:
A femoral component for a knee joint prosthesis, the femoral component comprising: a medial condyle portion including a medial posterior aspect with a curved contact surface, the medial condyle portion having a medial geometric center defined by the curved contact surface of the medial posterior aspect; a lateral condyle portion including a lateral posterior aspect with a curved contact surface, the lateral condyle portion having a lateral geometric center defined by the curved contact surface of the lateral posterior aspect, the femoral component having a femoral geometric center axis which extends through the medial and lateral geometric centers, the femoral geometric center axis corresponding to the geometrical center axis of a knee joint; and a patellar groove constructed and arranged to guide a patella during knee flexion and extension, the patellar groove extending along a curved patellar path from an anterior portion of the femoral component to a posterior portion of the femoral component between the medial condyle portion and the lateral condyle portion, the curved patellar path having a radius and being curved about an origin that is spaced from the curved patellar path by the radius, the origin being positioned anterior and proximal to the femoral geometric center axis.