CBT螺钉治疗A3型胸腰段骨质疏松性骨折的生物力学研究

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Abstract Objective To analyze biomechanical stability of cortical bone trajectory system inthe osteoporotic type-A3 thoracolumbar fractures.Methods Six fresh thoracolumbar spinal function units (L_1~3) were harvested from old cadaver spines.Bone mineral density (BMD) was measured for all the vertebral bodies.The ranges of motion of all specimens were detected on the MTS-858 spinal biomechanics testing instrument under different states respectively，normal state，classic pedicle screw fixation，cortical bone trajectoryscrew fixation，type A3 L₂ vertebral body fracture classicpedicle screw fixation，and type A3 L₂vertebral body fracture cortical bone trajectory screw fixation.Results Ranges of motion at flexion，extension，left bending，right bending，left axial rotation and right axial rotation were significantly lower in the cortical bone trajectory screw group and classic pedicle screw group than in the normal state group (P＜0.01).There were no significant differences between the rages of motion of the cortical bone trajectory screw fixation group and classic pedicle screw fixation group.The ranges of threedimensional motion were significantly lower in the type A3 L₂ vertebral body fracture classic pedicle screw fixation group and type A3 L₂ vertebral body fracture cortical bone trajectory screw fixation group than in the normal state group (P＜0.05).Likewise，there were no significant differences between the range of motion of the type A3 L₂ vertebral body fracture classic pedicle screw fixation group and type A3 L₂ vertebral body fracture cortical bone trajectory screw fixation group (P＞0.05).The range of motion between the classic pedicle screw fixation group and the type A3 L₂ vertebral body fracture classic pedicle screw fixation group was insignificant (P＞0.05).Conclusion These results confirmed that cortical bone trajectory technology can obtain similarimmediatestability as the traditional pedicle screw fixationinthe osteoporotic type-A3 thoracolumbar fractures.Simultaneously，it is a good choice for the osteoporotic type-A3 thoracolumbar fractures.

Key words： osteoporosis spinal fractures internal fixation cortical bone trajectory transpedicular screw biomechanics

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［1］Santoni BG，Hynes RA，McGilvray KC，et al.Cortical bone trajectory for lumbar pedicle screws［J］.Spine J，2009，9(5)：366-373.
［2］Mizuno M，Kuraishi K，Umeda Y，et al.Midline lumbar fusion with cortical bone trajectory screw［J］.Neurol Med Chir (Tokyo)，2014，54(9)：716-721.
［3］Song T，Hsu WK，Ye T.Lumbar pedicle cortical bone trajectory screw［J］.Chin Med J (Engl )，2014，127(21)：3808-3813.
［4］Ueno M，Imura T，Inoue G，et al.Posterior corrective fusion using a double-trajectory technique (cortical bone trajectory combined with traditional trajectory) for degenerative lumbar scoliosis with osteoporosis：technical note［J］.J Neurosurg Spine，2013，19(5)：600-607.
［5］Matsukawa K，Yato Y，Kato T，et al.In vivo analysis of insertional torque during pedicle screwing using cortical bone trajectory technique［J］.Spine，2014，39(4)：E240-E245.
［6］Matsukawa K，Yato Y，Hynes RA，et al.Cortical bone trajectory for thoracic pedicle screws：A technical note［J］.Clin Spine Surg，2017，30(5)：E497-E504.
［7］Erkan S，Wu C，Mehbod AA，et al.Biomechanical evaluation of a new axiaLIF technique for two-level lumbar fusion［J］.Eur Spine J，2009，18(6)：807-814.
［8］Phan K，Hogan J，Maharaj M，et al.Cortical bone trajectory for lumbar pedicle screw placement：A review of published reports［J］.Orthop Surg，2015，7(3)：213-221.
［9］Mai HT，Mitchell SM，Hashmi SZ，et al.Differences in bone mineral density of fixation points between lumbar cortical and traditional pedicle screws［J］.Spine J，2016，16(7)：835-841.
［10］Cho W，Cho SK，Wu C.The biomechanics of pedicle screw-based instrumentation［J］.J Bone Joint Surg (Br)，2010，92(8)：1061-1065.
［11］Perez-Orribo L，Kalb S，Reyes PM，et al.Biomechanics of lumbar cortical screw-rod fixation versus pedicle screw-rod fixation with and without interbody support［J］.Spine，2013，38(8)：635-641.
［12］Inceoglu S，Montgomery WH，Jr.，St CS，et al.Pedicle screw insertion angle and pullout strength：comparison of 2 proposed strategies［J］.J Neurosurg Spine，2011，14(5)：670-676.
［13］Baluch DA，Patel AA，Lullo B，et al.Effect of physiological loads on cortical and traditional pedicle screw fixation［J］.Spine，2014，39(22)：E1297-E1302.
［14］Matsukawa K，Yato Y，Kato T，et al.Cortical bone trajectory for lumbosacral fixation：penetrating S-1 endplate screw technique：technical note［J］.J Neurosurg Spine，2014，21(2)：203-209.
［15］邵明昊，吕飞舟，马晓生，等.腰椎皮质骨钉道螺钉在骨质疏松症患者中应用的三维有限元分析［J］.中华老年骨科与康复电子杂志，2015，1(2)：1-6.
［16］Mobbs RJ.The “medio-latero-superior trajectory technique”：an alternative cortical trajectory for pedicle fixation［J］.Orthop Surg，2013，5(1)：56-59.
［17］姚羽，薛华伟，姜星杰，等.皮质骨通道技术治疗单节段胸腰段骨折的临床应用［J］.交通医学，2016，30(5)：496-500.
［18］周春峰，赵剑.经椎弓根皮质骨通道固定技术应用于胸腰段爆裂性骨折的有限元研究［J］.南通大学学报(医学版)，2015，35(2)：117-121.
［19］姚羽，薛华伟，赵剑，等.腰椎皮质骨通道螺钉固定系统的生物力学实验［J］.中国组织工程研究，2017，21(3)：362-366.