Arthroscopic Rotator Cuff Repair With Synovectomy

Inclusion Criteria: \- Patients with a full-thickness rotator cuff tear undergoing arthroscopic rotator cuff repair Exclusion Criteria: * History of shoulder surgery * Acute trauma on affected shoulder * Chronic dislocation * Pyogenic infection * Rotator cuff arthropathy with glenohumeral osteoarthritis and superior migration of the humeral head * Isolated subscapularis tear * Psychiatric problems that precluded informed consent * An inability to read or write * Other serious issues that precluded participation in the study * Open surgery * Rotator cuff tear with worker's compensation claim * Refuse to participate in the study * LOM that need brisement force * Partial-thickness tear with focal full-thickness extension * Irrepairable rotator cuff tear * Subjects who, for any reason, are judged by the investigator to be inappropriate for this study, including a subject who had other severe medical condition or laboratory abnormality, or who is unable to communicate or to cooperate with the investigator