1Boucher HH . A method of spinal fusion. J Bone Joint Surg [Am] 1995, 41:248-259.
2Hanington PRand Tullors HS. Reduction of servere spondylolisthesis in children. [J] Southem Med 1969, 62:1 ~ 7.
3Steffee AD, Biscup RS, SitRowski DJ. Segmenetal spine plates with pediele screw fixation. A new internal fixation device for disorders of the lumbar and thorace- lumbar spine. Clinorthop, 1986, 203:45 ~ 53.
4Gaines RW, Carson WL. Experimental evaluation of seven different spinal fractare intermal fixation devices using nonfailure stability testing. The wad - sharing and unstable - mechanism concepts.Spine. 1990,15:11 ~ 14.
5Benne GJ, Serhan HA. An experimental study of lumbar destabiliztion. Restabi- lizalion and bone density. Spine,1997, 10:117-124.
6Branfley AG, May field JK. The effects of pedide screw fit. An in vitro study.Spine, 1994, 19:7152-1758.
7Carson WL, Duffield RC, et al. Internal forces and moments in transpedicular spine instrumentation. Spine, 1997,22:1160-1164.
8Zindrick MR, lorenz MA. Posterior lumbar fusion; overview off options and internal fixation devices. In Frymoyer .IW, ed.The adult spine. Philadelphia; Lippincott- Raven,1997.2175~ 2205.
9Mirkovic S, aabitbol JJ, Steinman J, et al. Anatomic considerations of sacral screw placement. Spine 1991,16; 289-294.
10Yuan HA, Garfin SR. Dickman CA, Mardjetko SM. A historical cohort study of pedieal screw fixation in thoracic, Lumbar and sacral fusions report. Spine 1994,19;2297-2299.
