4Hadjipavlou AG,Tzermiadianos MN, Katonis PG,et al. Percutaneous vertebroplasty and balloon kyphoplasty for the treatment of osteoporotic vertebral compression fractures and osteoporotic tumours. J Bone Joint Surg Br,2005,87( 12):1595-1604.
5Ryu KS,Park CK,Kim MC,et al. Dose dependent epidural leakage of polymethylmethacrylate after percutaneous vertebroplasty in patients with osteoporotic vertebral compression fractures. J Neurosurg(Spine 1 ), 2002,96 : 56-61.
6Baroud G, Crookshank M, Bohner M. High-viscosity cement significantly enhances uniformity of cement filling in vertebrop, lasty: an experimental model and study on cement leakage. Spine (Phi- la Pa 1976),2006,31(22) :2562-2568.
8Galaeoff LM, Chessare JW, Roders LF, et al. Multiple-level spinal injuries importance of early recognition. Am J Roentgend, 1978,130 (3): 665-669.
9Korres DS,Boscainos PJ,Papagelopoulos PJ,et al. Multiple level noncontiguous fracture of the spine [J].Clin Orthop,2003,411:95-102.
10Dick JC, Brodke DS, Zdeblick TA, et al. Anterior instrumentation of the thoracolumbar spine: a biomechaxical comparision[J].Spine, 1997,22(7) :744～50.
