【作者】 江振华； 陈向东； 张烽； 陶然；

【Author】 JIANG Zhen-hua, CHEN Xiang-dong, ZHANG Feng, et al. Depanrment of Emergency, Affiliated Hospital, Nantong University, Nantong226001, China

【机构】 南通医学院附属医院急诊外科；

【摘要】 目的:比较TSRH与Z-plate两种不同固定方法的可靠性及脊柱内固定后强度、刚度和稳定性等力学性能。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分两组(每组5具),分别用TSRH和Z-plate行侧前方固定,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%,统计显示两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,且操作简便,价格也低。更多还原

【Abstract】 Objective To compare the reliability of the two lateral-anterior fixation systems—TSRH and Z-plate, and provide scientific evidence for clinical use. Methods 15 fresh thoracolumbar specimen were used, 5 of then 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. Results 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 intensity and rigidity decreased 5% and 5% respectively, which did not show significant difference (P>0.05). Conclusion Lateral-anterior fixation by the use of TSRH not only can give satisfactory effect on intensity, rigidity and stability of the spine, but also is superior to the control group in both loading-bearing capacity and stability. There is no significant difference between the TSRH group and Z-plate group. But TSRH has is relatively simple to operate and is cheaper than Z-plate.更多还原