8Karaeminogullari O, Demirors H, Atabek M,et al. Vascular necrosis and nonunion after osteosynthesis of femoral neck fractures: effect of fracture displacement and time to surgery[J]. Adv Ther, 2004, 21(5):335-342.
9Bachiller FG, Caballer AP, Portal LF. Avascular necrosis of the femoral head after femoral neck fracture[J]．Clin Orthop Relat Res, 2002 ,399:87-109.
10Lee KB, Howe "IS, Chang HC. Cancellous screw fixation for femoral neck fractures: one hundred and sixteen patients[J]. Ann Aead Med Singapore, 2004,33: 248-251.
