Sichuan University Mar 9 2026 Rotator cuff tears are among the most common and debilitating musculoskeletal injuries, frequently causing chronic pain, reduced shoulder mobility, and a high risk of re-injury even after surgical repair. Although modern surgical techniques can reconnect injured tendons to bone, healing outcomes remain inconsistent. Unlike fetal tendons, which are capable of regenerating without scarring, adult human tendons typically repair themselves by forming dense fibrotic