Abstract:[Objective] To evaluate the clinical outcomes of open acromioplasty and osteoplasty of the humeral greater tuberosity com-bined with rotator cuff reattachment by double-row suture anchors for the subacromial impingement secondary to malunion of humeralgreater tuberosity fractures. [Methods] From June 2018 to October 2022, 17 patients received abovementioned surgical procedures for sub-acromial impingement secondary to malunion of humeral greater tuberosity fractures. The functional recovery of the affected shoulder wasevaluated. [Results] All the 17 patients were smoothly operated on with incision healing in the first-stage without infection, and were fol-lowed up for 6~12 months. Compared with those preoperatively, the VAS score [(7.5±1.1), (1.2±0.7), P＜0.001], UCLA score [(12.9±3.8),(30.9±2.2), P＜0.001], Constant-Murley score [(50.7±12.1), (95.1±9.4), P＜0.001] and lifting ROM [(94.9±12.1)°, (151.5±10.2)°, P＜0.001],as well as relative height of humerus head measured on images [(6.1±1.2) mm, (10.3±0.7) mm, P＜0.001] were significantly improved at thelatest follow-up, although there were no significant changes in subacromial space, acromial index, and acromial tilt angle (P＞0.05). [Con-clusion] The open acromioplasty and osteoplasty of the humeral greater tuberosity combined with rotator cuff reattachment by double-rowsuture anchors do effectively improve the mobility of the affected shoulder, with improvement of the relative height of the humerus head forsubacromial impingement secondary to malunion of humeral greater tuberosity fractures.