ulnar collateral ligament
Pronunciation: UL-nar co-LAT-er-al LIG-a-ment
Primary stabilizing ligament on the inner side of the elbow, commonly injured in throwing athletes.
Full Definition
The ulnar collateral ligament (UCL) is a triangular band of tissue that provides primary stability to the medial aspect of the elbow joint during throwing motions. It consists of anterior, posterior, and transverse bundles, with the anterior bundle being most critical for elbow stability. UCL injuries are particularly common in baseball pitchers and other overhead athletes due to the repetitive valgus stress placed on the elbow. Injury to this structure often requires surgical reconstruction, commonly known as 'Tommy John surgery,' named after the first baseball player to successfully undergo the procedure.
Usage
Usage note: Commonly abbreviated as UCL in medical documentation.
In Context
- "MRI revealed a complete tear of the ulnar collateral ligament requiring surgical reconstruction." — Diagnostic imaging report
- "The pitcher experienced medial elbow pain consistent with ulnar collateral ligament injury." — Clinical examination notes