Fig. 15. Ulnar collateral ligament tear of the first MCP joint. Short tau inversion recovery (STIR) image of the first MCP joint using a digit or small loop coil precisely depicts rupture of the ulnar collateral ligament (arrow) at its attachment on the base of the first proximal phalanx.

firm mass on the ulnar aspect of the first metacarpal head. Stener lesions have been reported to occur in up to 29% of patients with UCL injuries [16]. MRI can demonstrate both the UCL and the extensor aponeurosis and can depict Stener lesions accurately [6]. If a Stener lesion is present, only operative intervention allows apposition and healing of the traumatically displaced ligament in an anatomic position [15].


In conclusion, injuries of the fingers and thumb in the athlete are common. Mallet finger, jersey finger, boutonniere deformity, Bennett and Rolando fractures, and gamekeeper's thumb are just a few of the injuries that can occur in athletes. A thorough understanding of the mechanism of injury, osseous and soft tissue abnormalities, imaging features, and treatment is important in the care of athletes. Prompt and accurate diagnosis is important and may help minimize outcomes of malunion, posttraumatic arthritis, and debility.


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Arthrogram Metacarpophalangeal Joint

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