One hundred sixty patients (mean age 68 +/- 8 years) having primary total knee arthroplasty were assigned randomly to two rehabilitation programs: (1) clinic-based rehabilitation provided by outpatient physical therapists; or (2) home-based rehabilitation monitored by periodic telephone calls from a physical therapist. Both rehabilitation programs emphasized a common home exercise program. Before surgery, and at 12 and 52 weeks after surgery, no statistically significant differences were observed between the clinic- and the home-based groups on any of the following measures: (1) total score on the Knee Society clinical rating scale; (2) total score on the Western Ontario and McMaster Universities Osteoarthritis Index; (3) total score on the Medical Outcomes Study Short Form; (4) pain scale of the Knee Society clinical rating scale; (5) pain scale of the Western Ontario and McMaster Universities Osteoarthritis Index; (6) functional scale of the Western Ontario and McMaster Universities Osteoarthritis Index; (7) distance walked in 6 minutes; (8) number of stairs ascended and descended in 30 seconds; and (9) knee flexion range of motion, on either the per protocol or the intent-to-treat or the analyses. After primary total knee arthroplasty, patients who completed a home exercise program (home-based rehabilitation) performed similarly to patients who completed regular outpatient clinic sessions in addition to the home exercises (clinic-based rehabilitation). Additional studies need to determine which patients are likely to benefit most from clinic-based rehabilitation programs.
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