Isolated type 3 lunotriquetral coalition complicated by ulnar impaction syndrome. Subtle sclerosis and subchondral cyst formation (short white arrow) is present in a central location along the ulnocarpal surface of the lunotriquetral coalition, in addition to more prominent cystic changes and central osteophyte formation at the ulnar head (black arrow). Linear chondrocalcinosis is centered in the ulnocarpal joint space (long white arrow).