4Ficar RP Idiopathic mecrosis of the femoral head early diagnosis and treatment, bone Jiont Surg, 1985 ;67B: 3
5Atsumi T, kuroki Y. role of impairment of blood supply of the femoral head in the pathogensis of idiopathic Osteoneerosis. olin orthop, 1992 ;277:22
6Ohzono K. Takaoka K. saito s, et al. mtraosscous architecture in nontraumatie avlular necrosis of the femoral head mieroangigraphieand histologie study. Clin orthop 1992 ; 277 : 79
7Saito s, ohzono K, Ono K. early arteriopathy and postu latea, pathogenesis of osteone crosis of thefemoral head Clin orthop, 1992 ;277:98.
8Lausten GS, Arnoleli cc. blood perfnsion uneven in femoralhosto onecrosis A cia orthop scand 1993.
9Kaer Th, Peolersen NW, kristensen KD, et al. Intraosseous pressue and Oxygen tension in avascular necrosis and os teoathritis of the hip. Jbone Join surg, 1990,72B: 1023.