ACL Return to Sport after Injury Scale

The ACL-Return to Sport after Injury (ACL-RSI) Scale is a 12-item patient-reported outcome instrument designed to measure the psychological impact and readiness to return to sport following anterior cruciate ligament injury and reconstruction. Developed by Webster, Feller, and Lambros in 2008 and published in the British Journal of Sports Medicine, the ACL-RSI addresses a critical gap in ACL rehabilitation assessment by quantifying psychological barriers to sport resumption—emotions, confidence in the knee, and risk appraisal—which are often more limiting than physical recovery.