Avascular necrosis of the capitate and dorsal dorsi-flexion instability.
A vascular necrosis of the proximal part of the capitate is very rare and usually is secondary to a fracture of the waist in association with a scaphoid fracture---the naviculocapitate syndrome. A case is presented in which partial avascular necrosis of the capitate occurred in association with bilateral dorsal dorsi-flexion instability. The authors suggest that this phenomenon represents a form of the naviculocapitate syndrome in which ligamentous laxity altered the line of failure, thus sparing the scaphoid from fracture.
D000293:Adolescent; D002348:Carpal Bones / Q000293:injuries*; D005260:Female; D050723:Fractures, Bone / Q000150:complications*; D006801:Humans; D010020:Osteonecrosis / Q000175:diagnosis / Q000209:etiology*; D014954:Wrist Injuries / Q000150:complications* / Q000175:diagnosis