[1]王 星,张振宇,付兆君.腰椎峡部裂生物力学三维有限元分析[J].医学信息,2019,32(22):166-167.[doi:10.3969/j.issn.1006-1959.2019.22.058]
　WANG Xing,ZHANG Zhen-yu,FU Zhao-jun.Three-dimensional Finite Element Analysis of Lumbar Spondylolysis Biomechanics[J].Journal of Medical Information,2019,32(22):166-167.[doi:10.3969/j.issn.1006-1959.2019.22.058]
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腰椎峡部裂生物力学三维有限元分析()
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医学信息[ISSN:1006-1959/CN:61-1278/R]

卷:
32卷
期数:
2019年22期
页码:
166-167
栏目:
诊疗技术
出版日期:
2019-11-15

文章信息/Info

Title:
Three-dimensional Finite Element Analysis of Lumbar Spondylolysis Biomechanics
文章编号:
1006-1959（2019）22-0166-02
作者:
王 星; 张振宇; 付兆君
（空军特色医学中心，北京 100142）
Author(s):
WANG Xing; ZHANG Zhen-yu; FU Zhao-jun
(Air Force Characteristic Medical Center,Beijing 100142,China)
关键词:
腰椎峡部裂; 屈伸运动; 三维有限元
Keywords:
Lumbar spondylolysis; Flexion and extension movement; Three-dimensional finite element
分类号:
R687.3
DOI:
10.3969/j.issn.1006-1959.2019.22.058
文献标志码:
A
摘要:
目的 建立腰椎三维有限元模型，模拟分析不同运动状态下腰椎峡部的应力分布，探讨腰椎峡部裂滑脱产生的病理基础及力学机制。方法 选取成年男性志愿者1名，采用64排螺旋CT行腰部断层扫描，所得图像通过MIMICS软件处理优化，导入有限元分析软件，建立腰椎三维有限元模型（L1~L5），分析不同姿势下腰段脊柱椎弓峡部的受力及变形情况。结果 腰椎峡部在前屈、后伸位均出现明显的应力集中，后伸位更为明显，应力值由L1~L5向下逐渐加大。结论 腰椎峡部在后伸运动间，峡部应力异常集中，这种运动状态是产生后天性腰椎峡部裂及进一步滑脱病变的重要病理基础，双侧L5峡部裂在后伸位受到应力最大，活动度异常加大，最易产生滑脱病变。
Abstract:
Objective To establish a three-dimensional finite element model of lumbar spine, simulate the stress distribution of lumbar isthmus under different motion states, and explore the pathological basis and mechanical mechanism of lumbar spondylolisthesis. Methods One adult male volunteer was selected and 64-slice spiral CT was used for lumbar tomography. The images were optimized by MIMICS software. The finite element analysis software was introduced to establish a three-dimensional finite element model of lumbar spine (L1~L5). The force and deformation of the spinal canal isthmus. Results In the lumbar isthmus, there was obvious stress concentration in the flexion and extension, and the posterior extension was more obvious. The stress value gradually increased from L1~L5. Conclusion During the posterior extension of the lumbar isthmus, the isthmus stress is abnormally concentrated. This state of motion is an important pathological basis for the generation of acquired lumbar spondylolysis and further spondylolisthesis. The bilateral L5 isthmus is the most stressed and active in the posterior extension. Increase, the most likely to produce slippage lesions.

参考文献/References:

[1]孔庆奎,张立涛,谢元忠,等.椎弓峡部裂在腰腿疼痛患者中的患病率及其与椎体滑脱的相关性[J].临床放射学杂志,2015, 30(11):1666-1669. [2]李危石,孙卓然,陈仲强.正常国人脊柱一骨盆矢状位参数影像学研究[J].中华骨科杂志,2013,33(5):447-453． [3]张海龙,顾昕,贺石生,等.微创经椎间孔椎体间融合术与开放手术治疗腰椎滑脱症的疗效比较[J].中华骨科杂志,2011,31(10):1088-1092. [4]孙鲁琨,许春涛,刘华等.“U”形钛棒系统节段内固定联合峡部植骨治疗单纯性腰椎峡部裂[J].中国组织工程研究,2018,22(15):2340-2344. [5]张文志,丁英胜,段丽群,等.退变性腰椎滑脱的关巧突关巧形态学分析[J].中华骨科杂志,2015,35(8):865-870．

更新日期/Last Update: 2019-11-15