Shoulder rattling: 1. It may be caused by the relaxation of the joint capsule, especially for the elderly, as the joint space becomes narrower with age, the ligaments and tendons become relaxed, and the friction between the bursa and the bone during joint activities will produce a popping sound. 2. It may also be from the mutual friction between the tendons, ligaments, bursa and bone tissue of the shoulder joint, which is common in middle-aged and elderly patients who lack exercise. Patients. Therefore, if it is not accompanied by pain, it does not require special treatment and can be observed. If the shoulder rattling is accompanied by pain and cannot be effectively relieved after rest, you should go to a regular hospital in a timely manner to improve the MRI examination of the shoulder joint to clarify the cause of the rattling, and then choose a reasonable treatment method so that the symptoms of shoulder rattling can be treated in a timely and effective manner.