Rehabilitation after total knee arthroplasty (TKA) is an essential component of treatment. Various protocols and methodologies have evolved to enhance the effect of rehabilitation in the postoperative period. We prospectively evaluated the effect of using an antigravity treadmill as an alternative to routine postoperative physical therapy. Twenty-nine patients undergoing unilateral primary TKA were randomized to either gait training (standard outpatient physical therapy) or to the use of an AlterG® antigravity device for gait training for 2 days/week for 4 weeks for a total of 8 therapy sessions. Average age was 68 and 55% were female. The Knee Injury and Osteoarthritis Outcome Score (KOOS) and Timed Up and Go (TUG) test were collected at baseline (first therapy session), at final therapy session and at 3 months postoperatively. The numerical rating scale (NRS) for pain was measured at baseline and at end of therapy. Adverse events and complications were recorded.Introduction:
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