Nonspecific avascular necrosis of the pisiform bone: a case report.
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.
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