Fracture of the fused os trigonum.
D000328:Adult; D001265:Athletic Injuries / Q000000981:diagnostic imaging* / Q000601:surgery; D050723:Fractures, Bone / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008297:Male; D011859:Radiography; D013628:Talus / Q000000981:diagnostic imaging / Q000293:injuries*