Evaluation of rotator cuff injuries can be done in terms of symptoms, X-ray CT, and MRI, with MRI being the most accurate. The rotator cuff is the tendon that wraps around the head of the humerus and is mainly composed of the superior (supraspinatus tendon), anterior (subscapularis tendon), and posterior (infraspinatus tendon and teres minor tendon), and its main function is to maintain the movement and function of the shoulder joint. Evaluation of rotator cuff injury can be done in terms of symptoms, ancillary tests (X-ray, CT, MRI). The main symptoms are pain and weakness in the shoulder, aggravated by movements such as combing the hair, but the symptoms are not specific and can only be used as a reference. X-rays and CT examinations may reveal more severe injuries (cases of displacement), but have the important role of ruling out conditions such as fractures. MRI is the most important test for evaluating rotator cuff injuries. If a rotator cuff injury occurs, it is important to seek medical attention and follow the doctor’s instructions.