Shoulder discomfort and dysfunction are frequently brought on by rotator cuff tears (RCT).The aim of this study was to assess the biceps tenotomy, subacromial decompression, and arthroscopic debridement without Rotors' Cuff restoration in chronic massive RCT. Methods: This prospective case series study has been carried out on 23 patients diagnosed with chronic severe rotator cuff damage who underwent arthroscopic management. Adult patients were participated in the study with chronic tears, day and nocturnal discomfort that is not always constant. Strength and range of motion (rom) loss were assessed after a 6-month period of conservative therapies (intra-articular injection of corticosteroids and physical therapy) failed. Results: Patients with chronic massive RCT, operation time highly significantly lower (Median = 80 minutes) than hypothesized time, shoulder abduction technique rose following the operation, the acromio-humeral interval (AHI) score were highly significantly higher than hypothesized score. Post Elbow and Shoulder Surgeons of America really significant higher (Median = 90) than pre ASES (Median = 22), p < 0.0001 Conclusions :This procedure, which is rapid and simple with few side effects and consistent long-term benefits, is suitable for treating chronic large RCT, especially in older patients. The approach enhanced the studied patients' performance, range of motion, and discomfort, per the results.