1Rogmark C, Carlsson A, Johnell O, et al. Costs of internal fixation and arthroplasty for displaced femoral neck frac- tures : a randomized study of 68 patients [ J ]. Acta Orthop Scand,2010,74 (3) :293 - 301.
2Blomfeldt R,Tornkvist H,Ponzer S,et al. Comparison of inter- hal frxation with total hip replacement for displaced femoral neck fractures randomized, controlled trial performed at four years[J]. J Bone Joint Surg Am,2008,87(8) :1 680-1 687.
4Davidson CW, Merrilees M J, Wilkinson TJ, et al. Hip frac- ture mortality and morbidity can we do better[ J]. New Zeal- and Medical Journal,2011,114( 1 136) :329 -332.
