5Al-Ani AN,Samuelsson B,Tidermark J,et al. Early operation onpatients with a hip fracture improved the ability to return to inde-pendent living. A prospective study of 850 patients. J Bone JointSurg Am,2008,90(7) : 1436-1442.
7Yaozeng X, Dechun G, Huilin Y, et al. Comparison study of tre- chanteric fracture treated with the proximal femoral nail anti-rota- tion and the third generation of gamma nail. Injury, 2010,41 (12) :1234-1238.