Abstract:Objective: To analyze the clinical effect of single row anchor combined with bone tunnel (SRA-BT) and double row anchor (DRA) in treatment of greater tuberosity fractures of humerus. Methods: A retrospective study was conducted on 44 patients with greater tuberosity fractures from June 2017 to June 2021, and they were divided into SRA-BT group and DRA group by different surgical methods after doctor-patient communication. Data regarding to perioperative period, follow-up and radiographs were compared between the two groups. Results: Bone healing was achieved in all patients without infection or internal fixation failure, and there were no significant differences in operation time, intraoperative blood loss, fluoroscopy times, active motion time, wound healing time, and hospital stay between the two groups (all p>0.05). The incision length of SRA-BT group was longer than that of DRA group (P< 0.05). The in-patient costs of SRA-BT group was significantly lower than that of DRA group (P<0. 05). 2 cases with pain at the outside anchor nail was occurred in DRA group, but not in SRA-BT group. There were no significant differences in the time of full weight-bearing activity, distance of fracture, acromiohumeral interval and bone healing between the two groups (all P > 0.05). As time went during the follow-up, the VAS score, ASES score, ROM of flexion, ROM of abduction and ROM of external rotation of the two groups were significantly improved compared with those before operation (P< 0.05), and there was no significant difference between the two groups (P>0.05). Conclusion: The clinical effect of technology of SRA-BT and DRA in the treatment of greater tuberosity fractures was clear. Both of them can effectively improve shoulder joint function, relieve postoperative pain and reduce postoperative complications and secondary revision surgery. However, the SRA-BT was significantly superior to DRA in terms of in-patient costs and internal fixation loosening.