脊柱胸腰段骨折_____脊柱胸腰段骨折；

脊柱胸腰段骨折侧前方TSRH固定的生物力学研究及应用

http://www.100md.com 《中国矫形外科杂志》 2006年第6期

脊柱胸腰段骨折,,脊柱胸腰段骨折；,TSRH侧前方内固定；,生物力学；,应用,1材料与方法,2结果,3讨论,参考文献：

     测定TSRH用于脊柱侧前方内固定后强度、刚度和稳定性的力学性能。[方法]采用15具尸体胸腰段标本，5具为正常(NS)对照组，10具造成压缩性骨折后5具用TSRH行侧前方固定、另5具用Zplate固定作对照，应用实验应力分析法进行生物力学测试。[结果]应用TSRH内固定的脊柱应变、位移比正常脊柱对照组的应变、位移分别减小17%～20%和8%；固定后的强度和刚度与Zplate固定组相比仅小5%和5%，统计显示2种固定方法无显著性差异(P>005)。[结论]采用TSRH侧前方内固定后的脊柱不但强度、刚度和稳定性得到满足，而且在承载能力、脊柱的稳定性上优于正常对照组，与Zplate固定组相比无显著性差异，操作简便，价格低廉且临床应用疗效确切。

    关键词：脊柱胸腰段骨折； TSRH侧前方内固定；生物力学；应用

    Biomechanical study and application of lateralanterior internal fixation with TSRH in thoracolumbar fracture∥JIANG Zhenhua, CHEN Xiangdong,ZHANG Feng,et al. Department of Emergency, Affiliated Hospital of Nantong University,Nantong 226001

    Abstract：[Objective]To determine the strength, rigidity and stability of the spine with TSRH lateralanterior fixation. [Method]Fifteen fresh thoracolumbar specimen were used, 5 of them were used as control group, 10 of them were made compressed fracture and divided into two groups (each contained 5 specimen),TSRH and Zplate were used for lateralanterior fixation respectively. Biomechanical detection was carried on by the experimental stress analysis. [Result]Compared with the control group, the strain and displacement of the spine decreased 17%～20% and 8% respectively after TSRH fixation. Compared with Zplate group, the strength and rigidity decreased 5% and 5% respectively, which did not show significant difference (P>005).[Conclusion]Lateralanterior fixation with use TSRH not only has effective result in strength, rigidity and stability of the spine, but also is superior to the control group in loadingbearing ability and stability of the spine. There is no significant difference between the TSRH group and Zplate group. But TSRH is relatively simple to operate and is cheaper than Zplate, and has exact clinical ontcome. ......

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