Abstract: Objective To explore the clinical effect of shoulder arthroscopy on subacromial impingement syndrome （SIS）. Methods A total of 60 patients with SIS were treated with shoulder arthroscopy. UCLA score, ASES score, Constant-Murley score, and VAS score were used to evaluate shoulder function and pain. Results The 60 patients were followed up for 6 to 24 months. Except 1 patient with large rotator cuff tear who underwent repair of fascia lata free patch and suffered poor pain relief and recovery of joint function, the remaining patients were relieved from postoperative pain of the affected limbs and basically returned to normal joint function. At the last follow-up, the scores of shoulder function and pain were significantly better than those before operation （P<0.01）. Conclusion Shoulder arthroscopic surgery for SIS can achieve satisfactory results. Complications should be treated during the operation to ensure the clinical effect.

Key words: Shoulder arthroscopy, Surgery, Subacromial impingement syndrome