Sigma Rotating Platform Knee
The Sigma Rotating Platform Knee is designed to bend and rotate. This allows for less implant wear compared to traditional knee replacement.
Sigma Fixed-Bearing Knee
Fixed-Bearing knees are the most widely used knee replacements in the United States today. The design of the Sigma Fixed-Bearing Knee provides stability of the knee replacement and distributes pressure evenly throughout the joint, which helps reduce wear.
Sigma Fixed-Bearing Knees are based on the clinically proven P.F.C.® Knee, redesigned using advanced materials such as low-wear polyethylene. In a study of a group of knee replacement patients with the P.F.C. Sigma Fixed-Bearing Knee, 99.6% still had their implant at five years.
