Patent Document ID: 8449618
Application ID: 12952779
Patent Flag: 1

Claim One:
1. A knee prosthesis comprising: (a) a femoral component configured to fit on a distal end of a femur, the femoral component comprising an anterior portion, a posterior portion, and a distal portion connecting the anterior portion to the posterior portion, wherein the distal portion includes a continuously convexly curved medial articular portion extending from the anterior portion to the posterior portion and a continuously convexly curved lateral articular portion extending from the anterior portion to the posterior portion, wherein the femoral component further comprises a posterior cam wherein the posterior cam is asymmetric such that a lateral portion of the posterior cam is larger than a medial portion of the posterior cam; (b) a tibial articular component configured to fit on a proximal end of a tibial, the tibial articular component comprising a medial articular surface for articulating with the medial articular portion of the femoral component, and a lateral articular surface for articulating with the lateral articular portion of the femoral component; wherein, when the femoral component is positioned on the tibial articular component in a position and orientation corresponding to approximately zero degrees of flexion, a line extending from a center of contact between the medial articular portion of the femoral component and the medial articular surface of the tibial articular component to a center of contact between the lateral articular portion of the femoral component and the lateral articular surface of the tibial articular component is oriented at an angle of approximately 3 degrees from a line that is generally parallel to a distal internal surface of the femoral component, wherein the medial articular portion of the femoral component protrudes further distally than the lateral articular portion of the femoral component, and wherein the posterior portion of the femoral component comprises a posterior medial articular portion and a posterior lateral articular portion, wherein the posterior medial articular portion protrudes further in a posterior direction than the posterior lateral articular portion.