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Rotator Cuff Tears


The rotator cuff is a group of muscles and tendons that cover the head of the humerus and hold it securely inside the shoulder socket. The cuff helps maintain joint stability while allowing the arm to lift and rotate. A tear of the rotator cuff can be painful and can interfere with shoulder movement. Four muscles make up the cuff: the supraspinatus, infraspinatus, teres minor, and subscapularis muscles.