4Schipper IB, Marti RK, van der Werken C. Unstable trochanteric femoral fractures: extramedullary or intramedullary fixation. Review of literature[J]. Injury, 2004,35 (2) :142.
5Helwig P, Faust G, Hindenlang U, et al. Finite element a nalysis of four different implants inserted in different positions to stabilize an idealized trochanterie femoral fracture[J]. Injury, 2009,40 (3) : 801.
6Mereddy P, Kamath S, Ramakrishnan M, et al. The AO/ ASIF proximal femoral nail antirotation (PFNA) : a new design for the treatment of unstable proximal femoral fractures[J]. Injury, 2009,40 ( 4 ) : 428.
7Vidyadhara S,Rao SK. One and two femoral neck screws with intramedullary nails for unstable troehanteric fractures of femur in the elderly-randomized clinical trial[J]. Injury, 2007,38 (7) : 806.
8Lorich DG, Geller DS, Nielson JH. Osteoporotic pertrochanteric hip fractures management and current controversies[J]. Instr Course Lect, 2004,53 : 441.
9Sommers MB,Roth C, Hall H, et al. A laboratory model to evaluate cutout resistance of implants for pertrochanteric fracture fixation[J].J Orthop Trauma, 2004,18 (6) : 361.
10Simmermacher RK, Ljungqvist J, Bail H, et al. The new proximal femoral nail antirotation (PFNA) in daily practice: results of a multicentre clinical study[J]. Injury, 2008,39 (8) : 932.
