Current Rehabilitation Principles Following Meniscus Repairs.

Purpose of review: The purpose of this review is to synthesize current science on meniscus anatomy and biomechanics and repair techniques to create an empirical foundation for postoperative rehabilitation precautions and guidelines, including timelines, clinical and performance-based criteria for return to activity, to maximize both meniscal healing potential and patient recovery.

Recent findings: Recent literature has focused on meniscus repair rather than debridement, and rehabilitation protocols should be designed to optimize healing. Complex, unstable tears, like root and radial tears, disrupt hoop stress and warrant a more conservative protocol including 6 weeks of non-weightbearing; however, more stable tears, like ramp and vertical tears, can often weight bear immediately after surgery. All protocols should emphasize early protected joint motion. Return to activity guidelines remain ill-defined but this review explores evidence-based recommendations for timelines, strength and performance testing. Patients typically should wait ≥ 4 months for a return to activity and the presence of joint line tenderness or effusion could be a sign of delayed/failed healing. It is essential for therapists to know the size, type, and location of a meniscus repair to optimize patient outcomes. Guidelines for weight bearing, range of motion, strength training, and return to activity should vary per tear type and repair technique and recovery should be both time- and criteria-based. Return to activity should align with healing time, objective clinical and performance testing, and clinical and imaging exam findings. Future research should aim to optimize repair techniques and rehabilitation protocols, specifically further study on the timing to initiate weightbearing, early motion, and return to activity.