4Adams CT,Robinson CM,Coutr-Brown CM,et al. Prospeciteve randomized controlled trialofan intramedullary nail versus dynamic screw and plate for intertrochanteric fractures of the femur[J]. J Orthop Trauma,2001,15 (6):394-400.
5Takigami l,Matsumoto K,Ohara A,et al. Treatment of troehanteric fractures with the PFNA (proximal femoral nail antirotation)nail systemreport of early results[J]. Bull NYU Hosp Jt Dis. 2008,66(4):276-279.
6Brunner A,J?ckel JA,Babst R. The PFNA proximal femur nail in treatment of unstable proximal femur fractures-3 cases of postoperative perforation of the helical blade into the hip joint[J]. J Orthop Trauma. 2008,22(10) :731-736.
7Zou J,Xu Y,Yang H. A comparison of proximal femoral nail antirotation and dynamic hip screw devices in trochanteric fractures[J]. J Int Med Res,2009,37(4) : 1057-1064.
8Vidyadhara S,Sharath KR.One and two femoral neck screws with intramedullary nails for unstable trochanteric fractures offemur in the elderly-ran-domised clinical trial. Injury,2007,38:806-814.
9Baumgaertner MR,Sollberg BD.Awareness oftipapex distance reduces failure of fixation of trochanteric fractures of thehip.J Bone Joint Surg (Br), 1997,79:969-971.
10Praveen Mereddy,Sri Kamath.The AO/ASIF proximal femoral nail antirotation (PFNA):A new design for the treatmentof unstable proximal femoral fractures,lnjury,Int.J.Care Injured,2009,40:428-432.
