[1]郑琦,应小樟,石仕元,等.复杂性腰椎管狭窄症的有限元建模与分析[J].第三军医大学学报,2012,34(18):1897-1900.
 Zheng Qi,Ying Xiaozhang,Shi Shiyuan,et al.Finite element modeling and analysis of complicated lumbar spinal stenosis[J].J Third Mil Med Univ,2012,34(18):1897-1900.
点击复制

复杂性腰椎管狭窄症的有限元建模与分析(/HTML )
分享到:

《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
34卷
期数:
2012年第18期
页码:
1897-1900
栏目:
论著
出版日期:
2012-09-30

文章信息/Info

Title:
Finite element modeling and analysis of complicated lumbar spinal stenosis
作者:
郑琦应小樟石仕元汪翼凡刘耀生廖胜辉
杭州市红十字会医院骨科;中南大学信息科学与工程学院计算机科学系;军事医学科学院附属307医院骨科
Author(s):
Zheng Qi Ying Xiaozhang Shi Shiyuan Wang Yifan Liu Yaosheng Liao Shenghui
Department of Orthopaedics, Red Cross Hospital of Hangzhou, Hangzhou, Zhejiang Province, 310003;Faculty of Compute Science, College of Information Science and Engineering, Central South University, Changsha, Hunan Province, 410083;Department of Orthopaedics, No. 307 Hospital of PLA, Academy of Military Medical Sciences, Beijing, 100039, China
关键词:
腰椎腰椎管狭窄症有限元方法生物力学
Keywords:
lumbar spine lumbar spinal stenosis finite element method biomechanics
分类号:
R318.01;R319;R681.57
文献标志码:
A
摘要:
目的      精确建立复杂性腰椎管狭窄症(lumbar spinal stenosis , LSS)的退变腰椎全节段有限元模型,与正常模型进行对比。      方法      选取复杂性LSS患者采集CT数据,采用专用生物力学软件建立退变腰椎全节段模型,同时构建正常材质和几何形态的腰椎模型,用相同边界条件进行对比分析。      结果      复杂性LSS腰椎的刚度增加、活动度范围比正常模型要小,特别是后伸工况减少了25.4%。总体上,退变腰椎的应力有增大趋势,退变节段椎间盘L4~L5和邻近上位椎间盘L3~L4的终板、髓核和和维环基质应力分布趋向四周边缘集中,特别是基质应力最大增加129%。       结论      复杂性腰椎管狭窄症的腰椎有限元模型的活动度减少、刚度增加,退变椎间盘四周出现应力集中,促进邻近椎间盘退变。
Abstract:
Objective      To establish an accurate finite element (FE) model of complete lumbar spine with complicated lumbar spinal stenosis (LSS), then compare and analyze with normal model.       Methods      A woman with diagnosed complicated LSS was enrolled in this study after her agreement of informed consent. Her CT scan data were collected. By using specially designed modeling system, a complete FE model of the lumbar with complicated LSS was generated, as well as comparing lumbar model with normal material and geometry. Then, same boundary conditions were applied to do comparison.        Results      The results demonstrated that the complicated LSS model was stiffer, and its active movement range decreased by 25.4% compared to normal model. Generally, the stress in the complicated LSS model intended to increase. There were stress concentration around the endplate and disk at the degenerative intervertebral disc L4-L5 and adjacent disc L3-L4. And the maximum Mises stress of the anulus fibrosus was increased by 129%.       Conclusion      The lumbar spine with complicated LSS has less range of motion and is stiffer compared to normal model, and there are stress concentration at the degenerative intervertebral disc and adjacent intervertebral disc. The analysis result is useful to practical clinical diagnosis of lumbar spine with LSS.

参考文献/References:

郑琦, 应小樟, 石仕元, 等. 复杂性腰椎管狭窄症的有限元建模与分析[J].第三军医大学学报,2012,34(18):1897-1900.

相似文献/References:

[1]戴书华,邹利光,廖翠薇,等.腰椎椎体后缘软骨结节的影像学诊断[J].第三军医大学学报,2006,28(01):24.
[2]王群波,蒋电明,李智,等.纳米羟基磷灰石/聚酰胺66复合人工椎体治疗胸腰椎椎体肿瘤的效果[J].第三军医大学学报,2006,28(03):263.
[3]罗刚,李长青,腾海军,等.单节段腰椎小关节分级切除对腰椎稳定性影响的生物力学研究[J].第三军医大学学报,2005,27(18):1871.
[4]王洪伟,周跃,李长青,等.附加经伤椎椎弓根螺钉内固定治疗胸、腰椎骨折的临床评价[J].第三军医大学学报,2010,32(04):376.
 Wang Hongwei,Zhou Yue,Li Changqing,et al.Internal fixation of thoracolumbar spine fractures with screws through the pedical of fractured vertebral arch[J].J Third Mil Med Univ,2010,32(18):376.
[5]李长青,罗刚,周跃,等.微创三节段经皮椎弓根螺钉内固定选择性治疗胸腰椎骨折[J].第三军医大学学报,2009,31(22):2284.
 LI Chang-qing,LUO Gang,ZHOU Yue,et al.Application of mini-invasive percutaneous pedicle screw fixation in thoracolumbar fracture using multi-level Sextant system[J].J Third Mil Med Univ,2009,31(18):2284.
[6]时伟峰,郭从涛,周强.异体腓骨环状腰椎间融合器的生物力学研究[J].第三军医大学学报,2013,35(12):1279.
 Shi Weifeng,Guo Congtao,Zhou Qiang.Biomechanical study of allogeneic fibula ring lumbar interbody fusion cage[J].J Third Mil Med Univ,2013,35(18):1279.
[7]相子民,应大君,吴雪晖,等.自制异体骨腰椎间融合器的力学测评[J].第三军医大学学报,2007,29(12):1237.
 XIANG Zi-min,YING Da-jun,WU Xue-hui,et al.Biomechanical testing and evaluation of a self-made allograft interbody fusion cage at lumbar spine[J].J Third Mil Med Univ,2007,29(18):1237.
[8]王明贵,周跃,初同伟.腰椎间盘突出症手术疗效的临床观察[J].第三军医大学学报,2005,27(05):436.
[9]谢新立,程兵,杜晓光,等.“倒八字征”:第5腰椎关节突关节退行性变骨显像典型表现研究[J].第三军医大学学报,2011,33(13):1422.
[10]刘桂勇,胡永军,范远俊,等.椎体内植骨治疗胸腰椎爆裂性骨折[J].第三军医大学学报,2015,37(06):584.

更新日期/Last Update: 2012-09-18