Abstract: A femoral component of a knee prosthesis, wherein the femoral component includes a sharp radius at each end (e.g., the anterior end and the posterior end) of the femoral component is disclosed herein. The sharp radius at each end may form a “claw” at each end. Each of these claws may “dig” through the patient's cartilage into the bone (or may “dig” directly into bone if there is no intervening cartilage). One benefit provided by a claw may be facilitating a smooth transition of cartilage/poly bearing to femoral implant/poly bearing (e.g., during knee extension). A femoral component of a knee prosthesis, wherein the femoral component includes a raised rib having a bulbous terminus at a free edge is disclosed herein. This raised rib having a bulbous terminus at a free edge may, for example, simultaneously create sufficient implant strength and adequate cement fixation while minimizing the component's thickness.

Abstract: One embodiment of the present invention provides a femoral component of a knee prosthesis, wherein the femoral component includes a sharp radius at each end (e.g., the anterior end and the posterior end) of the femoral component. The sharp radius at each end may form a “claw” at each end. Each of these claws may “dig” through the patient's cartilage into the bone (or may “dig” directly into bone if there is no intervening cartilage). Enhanced fixation may be achieved with the claws “digging” and fixing into the bone as well as the claws providing additional cement pressurization (e.g., with the claws in the bone, cement is less likely to escape by the anterior and posterior ends). Further, one benefit provided by a claw may be facilitating a smooth transition of cartilage/poly bearing to femoral implant/poly bearing (e.g., during knee extension).