Physician Lecture: Innovations in the Treatment of Common Shoulder Injuries How do you know if you have tendonitis or a rotator cuff tear? What is tendonitis? What does a rotator cuff tear look like? What are the pain management options? Learn more about treating shoulder pain. What may be the causes? From tendonitis and rotator cuff tears to stiffness and arthritis, diagnosis and treatment of these common problems can lead to improved pain and function. (Javascript is required to view Mediasite content)