The supraspinatus is an important muscle around the shoulder joint, and the tendon of the supraspinatus is an important part of the rotator cuff of the shoulder joint. Once the tendon of the supraspinatus is torn, a series of symptoms of the shoulder joint will occur, including the following: 1. Pain. A partial tear of the supraspinatus is often caused by degeneration in the elderly and leads to impingement syndrome of the shoulder joint, which results in damage to the supraspinatus muscle by compression. The partial tear of the supraspinatus muscle can lead to a significant limitation of shoulder lift and abduction, as well as limitation of forward flexion and back extension. If necessary, minimally invasive arthroscopic surgery may be required to suture or repair the torn portion.