An ulnar collateral ligament injury or UCL injury is an elbow injury. UCL tear or torn UCL can happen due to overuse. The ligament injury can cause pain and tenderness at elbow. Treatments can include rest, icing, medications and physiotherapy. The healthcare provider or doctor performs a physical exam after reviewing can medical history. Doctors can check the range of motion, elbow stability, strength and shoulder. Treatments depend on the severity of the UCL injury.