Reason: rule out MCP radial collateral ligament tear of the thumb-would like to locate level of tear History: pain Patient motion artifact limits multiple sequences.LIGAMENTS: There is disruption of the distal fibers of the ulnar collateral ligament of the first MCP joint. The proximal fibers of the ulnar collateral ligament appear to be retracted and portions are external to the adductor aponeurosis. The radial collateral ligament appears intact.TENDONS: The flexor and extensor tendons appear intact. The adductor tendons appear intact. BONES: There is increased abnormality within the ulnar aspect of the head of the first metacarpal which may reflect a bone contusion.ADDITIONAL
Findings indicating disruption of the ulnar collateral ligament. Portions of the ulnar collateral ligament appear retracted and external to the adductor aponeurosis indicating a Stener lesion. Other findings as described above.