Patent ID: 8357202

Claim:
A femoral condylar implant having at least one condyle with an articular surface, the articular surface adapted for use with a knee and comprising: a J-shaped curve extending along the entire articular surface from a posterior side of the implant to an anterior side of the implant in a sagittal plane, said posterior side positioned to contact the articular surface at greater than 90 degrees flexion of the knee, said anterior side positioned to contact the articular surface at full extension of the knee, said J-shaped curve defining at least five radii that progressively, serially increase in size along the entire articular surface from said posterior side to said anterior side, respective centers of said radii tracing an arcuate path in which a center of a first radius is posterior of a center of a neighboring second radius when said first radius is smaller than said second radius, such that the largest of said five radii defines an angle with the smallest of said five radii that is greater than 90 degrees, and wherein there are no radii having a decreasing size along the entire articular surface from said posterior side to said anterior side.