[Roentgenotopographic forms of aseptic necrosis of the femur head in adults].

On the basis of the data of X-ray examination of 378 patients (466 joints) with aseptic necrosis of the femoral head and their surgical treatment (314 patients) the authors have distinguished four roentgenotopographic forms of avascular lesions: peripheral, central, segmental and total. Certain dependence of the localization of the necrotic focus on a number of determined etiologic factors has been pointed out, such as the character of the preceding injury and the type the hip lesion, supercooling or the patient's occupation. The authors believe that the choice of the most adequate type of surgical intervention should be based not only on the stage of the process, but also on the size and the localization of the femoral head lesion.