Rotator cuff injuries generally cause edema in the arms and fingers, but generally do not cause edema in the legs and feet. When rotator cuff is damaged due to external forces such as fall, impact, etc., it will cause soft tissue and blood vessel injuries, which will usually lead to localized congestion and edema. Swelling of the arms and fingers can be caused by local blood circulation disorders. Rotator cuff injury can also be caused in middle-aged and elderly patients due to degenerative lesions. Degenerative lesions of rotator cuff can cause aseptic inflammation of the joint capsule, and the inflammatory factor stimulates the bone marrow, which leads to local tissue fluid exudation, edema, etc. In severe cases, it can radiolucent cause swelling and pain in the arm and fingers. Postoperative rotator cuff injury can also cause edema of the arm and fingers. It may be caused by the influence of blood return to the upper limb after large amount of saline is instilled in the joint cavity during the operation. Rotator cuff injury may generally cause symptoms in the upper extremity, and will not cause circulation disorders in the lower extremity such as edema in the legs and feet. If symptoms such as swelling and pain in the arms and fingers occur, it is recommended to go to the hospital and take correct treatment measures under the guidance of the doctor.