109 patients scheduled to undergo TKA were randomized to receive or not receive continuous passive motion (CPM) treatment during postoperative therapy. The purpose of this study was to determine the efficacy of the proposed short-term benefits CPM by means of measuring the active range of motion (AROM), pain, and discharge disposition after a follow-up period of 3 months. Results demonstrated that there were no significant clinical differences between study groups with respect to with to the aforementioned outcomes, suggesting that standard use of CPM provide no clinically relevant advantages.