Supervised Exercise versus Usual Care for Patellofemoral Pain Syndrome

OBJECTIVE: To compare the effectiveness of supervised exercise therapy with usual care on self-reported recovery, pain, and function in persons with patellofemoral pain syndrome. DESIGN: Randomized, controlled, unblinded, multicenter trial of 3 month's duration. Sample size was calculated with 80% power to show a minimum clinically important difference of 22% in recovery after 1 year, at P or=18y).