Ulnar collateral ligament injury of the elbow means: Injury to the elbow ulnar collateral ligament UCL: Ulnar collateral ligament injury is a result of an injury to the ligament. This ligament helps keep the bone arrangement between the arm and forearm bones in check. The injury to the ulnar collateral can happen suddenly if the ligament is damaged or it may occur slowly over time due to repeated stress on the ligament. Overhead throwers, such as baseball pitchers and those who are involved in other throwing activities, like volleyball or tennis, are at greatest risk of ulnar collateral injury. The symptoms include pain in the inner elbow, stiffness at the elbow joint and tingling or numbness on the fingers and little fingers. If mild injuries do not respond to treatment, surgery is possible.
(in Medical Dictionary)