Quadratus femoris muscle pedicle bone flap transplantation combined with hollow compression screw fixation versus AO hollow compression screw fixation in the repair of femoral neck fracture in young and middle-aged patients   Chinese Journal of Tissue Engineering Research . 2014, (48): 7792 -7796 .  DOI: 10.3969/j.issn.2095-4344.2014.48.015