title: Traumatic posterior dislocation of the hip--prognostic factors influencing the incidence of avascular necrosis of the femoral head.
abstract: To elucidate the factors important for development of avascular necrosis of the femoral head following traumatic posterior dislocation of the hip, 98 adult patients with 100 hip dislocations were reviewed after a minimum follow-up of 5 years. Avascular necrosis of the femoral head was found in only 4.8% of the hips reduced within 6 h, but in 52.9% of the hips reduced more than 6 h after the injury. Dislocations were classified according to Stewart and Milford [11]; a significantly higher incidence of avascular necrosis was found in grade-III and -IV dislocations than in grade-I and -II dislocations. We could not demonstrate any benefit from skeletal traction or non-weight bearing. The age of the patients was of no importance.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005271:Femur Head Necrosis / Q000209:etiology*; D006617:Hip Dislocation / Q000150:complications* / Q000473:pathology / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis