Range of Motion of Posterior-Cruciate-Substituting Total Knee Replacements: The Effect of Bearing Mobility

A satisfactory postoperative range of motion is an important component of a successful result of total knee arthroplasty. Previously, we conducted an analysis to compare the weight-bearing and non-weight-bearing ranges of motion in subjects with a fixed-bearing posterior-cruciate-retaining or posterior stabilized total knee replacement1. The purpose of this follow-up study was to determine the difference between the weight-bearing and non-weight-bearing ranges of motion in patients with either a mobile-bearing posterior stabilized total knee replacement or a fixed-bearing posterior stabilized total knee replacement. A secondary goal of this study was to assess if the weight-bearing range of motion was affected by the implant type—that is, a fixed-bearing or a mobile-bearing posterior stabilized total knee replacement.