Tommy John surgery
Surgical procedure for the elbow

Ulnar collateral ligament reconstruction, also known as Tommy John surgery, is a surgical graft procedure where the ulnar collateral ligament in the medial elbow is replaced with either a tendon from elsewhere in the patient's body, or with one from a deceased donor. The procedure is common among collegiate and professional athletes in several sports, particularly in baseball. The surgery is performed to restore optimal function for repetitive elbow movements or specifically throwing mechanics, often extending the careers of professional athletes. In many athletes, the surgery is done more than once during their careers.
The public source identifies “Tommy John surgery” as surgical procedure for the elbow. This brief keeps that definition visible, then builds a research path around Tommy, John and surgery.
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This entry incorporates text from “Tommy John surgery” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.