2[2]Swionkowsdki MF,Winguist RA,Hansen ST Jr.Fractures of the femoral neck in patients between the ages of twelve and fortynine years.J Bone Joint Surg(Am),1984,66(6):837-846.
10Bray TJ, Smith-Hoefor E, Hooper A, et al. The displaced femoral neck fracture. Internal fixation versus bipolar endoprosthesis. Results of a prospective, randomized comparison[J]. Clin Orthop , 1998,230:127-140.