56-year-old female with suspected right thumb ulnar collateral ligament injury. Presents with pain and decreased range of motion. LIGAMENTS: There is disruption of the distal fibers of the ulnar collateral ligament just proximal to its insertion on the proximal phalanx. The proximal fibers of the UCL are retracted and appear to be situated superficial to the adductor pollicis aponeurosis, compatible with a Stener lesion.TENDONS: The adductor pollicis aponeurosis/tendon appear intact. The flexor and extensor tendons appear intact.BONES: No bone marrow signal abnormalities identified.ADDITIONAL
1. Disruption of the ulnar collateral ligament with findings suggestive of a Stener lesion as described above.2. 1 mm focus of low signal abnormality may represent a loose body/articular cartilage fragment within the MCP joint of the thumb.