Patent ID: 8236061

Claim:
An orthopaedic knee prosthesis comprising: a femoral component having a condyle surface curved in the sagittal plane; and a tibial bearing having a bearing surface configured to articulate with the condyle surface of the femoral component, wherein the condyle surface (i) contacts the bearing surface at a first contact point on the condyle surface at a first degree of flexion less than about 30 degrees, (ii) contacts the bearing surface at a second contact point on the condyle surface at a second degree of flexion greater than about 45 degrees, and (iii) contacts the bearing surface at a third contact point on the condyle surface at a third degree of flexion greater than the second degree of flexion, wherein the condyle surface in the sagittal plane has a first radius of curvature at the first contact point, a second radius curvature at the second contact point, and a third radius of curvature at the third contact point, the third radius of curvature being greater than the second radius of curvature by at least 0.5 millimeters, wherein the condyle surface in the sagittal plane between the first contact point and the second contact point includes a plurality of curved surface sections, each curved surface section having a different radius of curvature.