17-year-old male pitcher with medial elbow pain. Evaluate ulnar collateral ligament. LIGAMENTS: Intra-articular contrast material traverses a linear defect traversing the entire ulnar collateral ligament, consistent with complete rupture (image 13; series 501).TENDONS: No significant abnormality noted.ARTICULAR SURFACES AND BONE: Incidental note is made of a benign bone island within the distal humerus. No evidence of articular cartilage degeneration. No bone marrow signal abnormality is identified.SURROUNDING STRUCTURES: No significant abnormality noted.ADDITIONAL
Findings consistent with complete rupture of the ulnar collateral ligament.