title: Nonspecific avascular necrosis of the pisiform bone: a case report.
abstract: Taking into consideration the enlargement and sclerosis of the entire pisiform bone and the smooth articular surfaces of the pisotriquetral joint, the author has speculated that this may represent a nonspecific avascular necrosis with an as yet unknown cause.
mesh_terms: D002348:Carpal Bones / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D010020:Osteonecrosis / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D011859:Radiography