16-year-old male. Elbow pain medially for a year. Evaluate for UCL tear. LIGAMENTS: We see no full-thickness rupture of the UCL; however, there is thin linear intermediate signal intensity between the distal fibers of the anterior bundle of the UCL and the underlying sublime tubercle of the coronoid process of the ulna, suggestive of mild partial thickness undersurface stripping of the ligament. The lateral collateral ligament appears intact.TENDONS: The common flexor and extensor tendons are intact. The biceps and brachialis tendons are intact. The triceps tendon is intact.ARTICULAR SURFACES AND BONE: We see no osteochondral defects and the bone marrow signal intensity is within normal limits.SURROUNDING STRUCTURES: Contrast extends down the lateral musculature of the forearm related to the arthrogram injection.ADDITIONAL
Mild stripping of the undersurface fibers of the anterior bundle of the UCL from the coronoid process that suggests a partial-thickness undersurface tear.