Deep Flexion Radius and Flared Posterior Condyles
The shorter posterior condyles facilitate the relaxation of soft-tissues to enable deep flexion. The condylar geometry is designed to allow for rapid flexion, enhanced contact area and natural knee rotation through 150+ degrees of flexion.

Flaring the posterior condyles accommodates increased angles of tibial rotation as the knee approaches deep flexion, culminating in up to 20 degrees of rotation while maintaining excellent contact area.1
References
1. Stryker data on file.