Metformin Reduces the Incidence of Shoulder Stiffness After Arthroscopic Rotator Cuff Repair: A Randomized, Double-Blinded, Placebo-Controlled Trial. - Feng, Junhao; Huang, Ke; Wu, Dandong; Li, Bowen; Xu, Wei; Huang, Wei; Zhu, Zhenglin; Chen, Hong (American Journal of Sports Medicine, 2025)