[1]刘峻,鞠昌军,林海朋,等.纹牙弧轨钉板系统治疗腰椎单节段失稳性疾病的 生物力学测试[J].中医正骨,2012,24(07):8-12.
　LIU Jun*,JU Chang-jun,LIN Hai-peng,et al.Biomechanical test on the curative effect of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2012,24(07):8-12.
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纹牙弧轨钉板系统治疗腰椎单节段失稳性疾病的 生物力学测试()
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《中医正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第24卷
期数:
2012年07期
页码:
8-12
栏目:
基础研究
出版日期:
2012-07-30

文章信息/Info

Title:
Biomechanical test on the curative effect of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases
作者:
刘峻; 鞠昌军; 林海朋; 孙金星; 谭远超
山东省文登整骨医院,山东 文登 264400
Author(s):
LIU Jun*; JU Chang-jun; LIN Hai-peng; SUN Jin-xing; TAN Yuan- chao.*
Orthopaedics Hospital of Wendeng City,Wendeng 264400,Shandong,China
关键词:
腰椎 失稳 内固定器 生物力学
Keywords:
Lumbar vertebrae;  Instability;  Internal fixators;  Biomechanics
摘要:
目的:评价纹牙弧轨钉板系统治疗腰椎单节段失稳性疾病的生物力学性能。方法:取4具新鲜猪L2～ S1节段脊柱标本,分别将4具标本标记为1号、2号、3号、4号,并制成L3～4椎间失稳模型。分别用自行 研制的纹牙弧轨钉板系统模拟手术,行单节段经椎弓根固定,并进行轴向和弯曲扭转加载测试,观察纹牙弧轨钉板系统的应力、应 变关系特点。结果:①在压缩实验中,最大载荷达到600 N时,压缩引起的正应力、剪应力均较小; 载荷达600 N时,中心加载最大 位移量为1.05 mm,偏心加载最大位移量为2.07 mm; 在 0～600 N 轴向加载范围内,纹牙弧轨钉板系统应力与应变呈线性关系。 ②在弯曲扭转实验中,标本的应力与应变呈线性关系; 当扭转角达到3°时,平均扭矩为18.06 N·m。结论:纹牙弧轨钉板系统具 有较强的抗轴向和弯曲扭转载荷能力,能为腰椎失稳节段提供即刻的稳定性。
Abstract:
Objective:To evaluate the biomechanical property of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases.Methods:Four fresh spine specimens of L2～ S1 segments of pig were fetched and marked with No.1,No.2,No.3 and No.4 respectively,then L3～ 4 intervertebral instability models were built from them.They were administrated with simulating operation of transpedicular fixation in the single segment through self-designed thread-tooth arc-track screw- plate system,then they were processed with axial loading test and torsion test,and the stress-strain relation of the thread-tooth arc-track screw-plate system was observed.Results:①In the compressive test,the normal stress and shear stress caused by the compression were all low when the maximum load came to 600 N; when the load reached to 600 N,the maximum displacement of central loading was 1.05 mm and the maximum displacement of eccentric loading was 2.07 mm; when axial loading changed within the range of 0～600 N,there was a linear relationship between stress and strain for the thread-tooth arc-track screw-plate system.②In the bending torsion test,there was a linear relationship between stress and strain for the specimen; when torsion angle came to 3°,the average torque was 18.06 N·m.Conclusion:Thread-tooth arc-track screw-plate system can provide immediate stability for lumbar instability segments for its higher capacity to resist axial and torsion load.

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备注/Memo

备注/Memo:
2011-11-23收稿 2012-03-23修回
基金项目:威海市科技发展计划项目(2009-3-89-1)
更新日期/Last Update: 2012-07-30