Patent ID: 8795380

Claim:
An orthopaedic knee prosthesis comprising: a femoral component having a condyle surface that is curved in the sagittal plane, the condyle surface including: an inferior-most point, a distal surface extending posteriorly from the inferior-most point to a superior-most point, the distal surface defining an arc having a magnitude of about 30 degrees between the inferior-most point of the condyle surface and the superior-most point of the distal surface, a first posterior surface connected to the superior-most point of the distal surface, the first posterior surface extending superiorly and posteriorly away from the distal surface to define an arc having a magnitude of about 15 degrees, and a second posterior surface having an inferior point connected to a superior-most point of the first posterior surface, the second posterior surface extending superiorly from the inferior point to a superior-most point, wherein (i) the condyle surface in the sagittal plane has a first radius of curvature at a first point on the distal surface, (ii) the condyle surface in the sagittal plane has a second radius of curvature at a second point on the second posterior surface, and (iii) the condyle surface in the sagittal plane has a third radius of curvature at a third point on the second posterior surface positioned between the second point and the superior-most point of the second posterior surface, 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 point and the second point includes a plurality of curved surface sections, each curved surface section having a different radius of curvature.