Evaluation of arthroscopic repair in recurrent shoulder dislocation

Abstract Objective: To evaluate the outcomes of arthroscopic repair for recurrent shoulder dislocation and to identify the risk factors for recurrence and complications. Method: A retrospective study of 51 patients who underwent arthroscopic repair for recurrent shoulder dislocation at Thong Nhat Hospital, Ho Chi Minh City, Vietnam from June 2015 to June 2020. Preoperative and postoperative data were collected and analyzed, including the Instability Severity Index Score (ISIS), range of motion (ROM), functional scores, pain score, and radiographic findings. Result: The mean follow-up period was 24 months. The mean preoperative ISIS score was 1.25. The mean postoperative ROM of flexion and abduction improved significantly from 80.1° (58°-105°) to 83.8° (78°-90°), respectively. The mean postoperative functional scores (Constant, UCLA, and Oxford) also improved significantly from 68.6 (59-79) to 86.4 (81-92). The mean postoperative pain score (VAS) decreased significantly from 1.3 (0-7) to 0.45 (0-3). There were no cases of postoperative redislocation. The most common complications were cartilage loss (7.8%) and osteoarthritis (3.9%). The failure rate of arthroscopic repair was 5.9%, which required revision surgery. Conclusion: Arthroscopic repair for recurrent shoulder dislocation is a safe and effective treatment option with low recurrence rate, good functional outcomes, and few complications. However, longer follow-up and larger sample size are needed to confirm the long-term results and to identify the optimal candidates for this procedure.