Support WBURPopular Surgery To Ease Chronic Shoulder Pain Called Into QuestionPlay03:04Download AudioPatti NeighmondNovember 20, 2017 ShareDoctors think the chronic pain of "shoulder impingement" may arise from age-related tendon and muscle degeneration, or from a bone spur that can rub against a tendon. (Michele Constantini/PhotoAlto/Getty Images)
