I. What is rotator cuff The rotator cuff is a tissue consisting of four muscles and tendons inside the shoulder joint, which is like a cuff covering the upper end of the humerus. It plays an important role in all directions of shoulder joint activities, and its role is similar to that of a hanger for building a house. Rotator cuff injury can lead to the inability to lift the upper limb. What are the cases of rotator cuff injury? Shoulder trauma (such as car accident injury) Throwing activities like baseball throwers Chronic injury caused by subacromial impingement C. What are the manifestations of rotator cuff injury? Pain in the shoulder, especially at night. At present, rotator cuff repair surgery under shoulder arthroscopy has been widely carried out, which has the advantages of low surgical trauma and fast recovery. V. Rotator cuff injury rehabilitation exercises 1. 0-2 weeks after surgery Use a brace to keep the shoulder joint in a mild external booth. On the first day after surgery, start active activities of the elbow, wrist and finger joints, and gradually increase the time and number of activities. On the 2nd postoperative day, start passive activities of the shoulder joint, pendulum-like activities can be performed, and it is appropriate not to cause pain. 2.2-6 weeks after surgery Rotator cuff tears larger than 1cm still need to be protected with braces. Under the condition that does not cause shoulder pain, perform passive shoulder joint swing and circle exercises. Do passive back and forth, left and right oscillations and clockwise and counterclockwise circling exercises in as wide a range of motion as possible. Four weeks after surgery, gradually increase the passive range of motion of the shoulder joint so as not to cause pain. Perform wall climbing exercises within the pain-free range, 15-20 strokes each time, twice a day. 2-4 weeks postoperatively, the elbow joint can be transitioned from passive to active motion. At 2 weeks postoperatively, shrugging motion exercises are started, (joint inactivity). 6 weeks after surgery, start the active movement exercise of shoulder muscles, but should avoid doing the strength exercise to abduction. 3.6-12 weeks after surgery Starting from 6 weeks after surgery, increase the active range of motion of the shoulder joint, and complete the maximum range of motion of the shoulder joint without causing pain. Use the apparatus to assist the exercise, 30-40 strokes each time, twice a day. At 10 weeks postoperatively, continue active shoulder joint movement training within the tolerated range, and at 12 weeks or gradually start shoulder abduction exercises to basically restore the shoulder movement to the normal range. At 8 weeks postoperatively, resistance training was started, and internal and external rotation resistance training of the shoulder joint was done with the elbow flexed. Open chain training was gradually started at 12 weeks postoperatively. Muscle training should be high repetition, low load and gradual. Posture correction education and muscular endurance training should be performed at the same time. 4. 12-16 weeks after surgery Strengthen the active activities of shoulder joint in all directions so that the activities of shoulder joint in all directions can reach the normal range. Continue to strengthen the strength and endurance of the muscles around the shoulder. Gradually restore the normal motion function of the shoulder joint. After the shoulder joint range of motion and muscle strength reach normal, continuous shoulder joint flexibility and coordination training should be emphasized in daily life activities. Special reminder: For three months after surgery, patients are advised to visit the outpatient clinic for monthly review and to follow the physician’s advice.