Tommy John Elbow Procedure (UCLR) Overview
Ulnar Collateral Ligament Reconstruction, or UCLR, is more commonly known as Tommy John surgery. It is a procedure that is done to repair a damaged ligament in the elbow called the ulnar collateral ligament (some use the term medial collateral ligament). This injury typically makes the elbow feel unstable and requires physical therapy. If the injury does not respond to physical therapy, surgery is typically the next treatment considered.
Source: Verywell Health