Single Radius
Studies of kinematics and biomechanics1 have identified a constant radius in natural knee motion centered about the transepicondylar axis.
The Triathlon TS knee system is designed with a patented single radius. Centering the radius of curvature about the transepicondylar axis provides ligament isometry, not only in full extension and 90 degrees of flexion, but through the entire range of motion. The single radius centered about the epicaondylar axis reproduces natural knee movements designed to minimize the quadriceps forces required for extension thereby maximizing muscle efficiency.1-3
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