4Polly DW Jr,Orchowski JR,Ellenbogen RG.Revision pedide screws. Bigger Shims-what is Best Spine,1998,23 : 1374.
5[1]Kowalski RJ,Ferrara LA,Benzel EC,et al.Biomechanics of bone fusion.Neurosurg Focus,2001,10(3):1～7
6[2]Brodke DS,Dick JC,Kunz DN,et al.Posterior lumbar interbody fusion:a biomechanical comparison,including a new threaded cage.Spine,1997,22(1):26～31
7[5]Wilke HJ,Wenger K,Claes L.Testing criteria for spinal implants:recommendations for the standardization of in vitro stability testing of spinal implants.J Eur Spine,1998,7(6):148
8[7]Van Akkerveeken PF,O'Brien JP,Park WM,et al.Experimentally induced hypermobility in the lumbar spine:A pathologic and radiologic study of the posterior ligament and annulus fibrosus.Spine,1999,4(7):236～241
9[9]Panjabi M,Dvorak J,Duranceau J,et al.Three-dimensional movements of the upper cervical.Spine,1988,13(11):726～730
10[10]Panjabi M,Duranceau JS,Oxland TR,et al.Multidirectional instabilities of traumatic cervical spine injuries in a porcine model.Spine,1989,14(10):1111～1115
