Of musculoskeletal injuries, rotator cuff injuries are one of the most frequent. A rotator cuff injury is quite painful and can cause shoulder weakness; however, it does not cause swelling. Interestingly, patients often do not have symptoms. Most of the time; however, the patient will experience pain and weakness during activities involving the arms. Raising the arm above shoulder level can prove particularly painful. On the bright side, there are quite a few ways to treat rotator cuff injuries. Your age and the type of injury you have will help determine which option will work best for you.