5[1]Pavolairer P, Karahariju E, Slatis P,et al. Effect of rigid plate fixation on structure and mineral content of cortical bone[J]. Clin Orthop,1987,136(2):287~293.
6[2]Cann CE.Quantitative CT for determination of bone mineral density:a review[J].Radiology,1988,166(4):509~516.
7[3]McAfee PC,Farely ID,Sutterlin CE,et al.The effect of spinal implant rigidity on vertebral bone density:a canine model[J].spine,1991,16(6s):190~197.
8[4]Farely ID,McAfee PC,Gurr KR,et al.Quantitative histologic study of the influence of spinal in strumentation on lumbar fusion:a canine model[J].J Orthop res,1989,7(5):709~722.
9[5]Kotani Y,Cunningham BW,Cappuccino A,et al. The role of spinal instrumentation on lunbar posterolateral fusion[J].Spine,1996,21(3):278~287.
10[6]Halvorson TL,Kelley LA,Thomas KA,et al.Effect of bone mineral density on pedical screw fixation[J].1994.19(21):2415~2420.