Does a mobile-bearing, high-flexion design increase knee flexion after total knee replacement?

This report has been verified by one or more authors of the original publication.

77 patients with osteoarthritis of the knee were randomized to receive a total knee replacement with either a standard fixed-bearing posterior cruciate ligament-preserving design (FB-S) or a high-flexion rotating-platform posterior-stabilized design (RP-F). Throughout the course of the study, active non-weight-bearing flexion along with functional range of motion were measured to determine which total knee replacement design better allows patients to participate in daily activities. By the end of the 1 year study, it was determined that the RP-F group achieved greater active non-weight-bearing knee flexion, but reported more pain after surgery and had a lower weight bearing flexion during slope and level walking.