中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (3): 404-408.doi: 10.3969/j.issn.2095-4344.0038

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

三维有限元模型分析旋转手法中旋转方向对颈椎间盘位移和椎间孔容积的影响

黄学成1,2,叶林强2,梁 德2,王千里2,余伟波1,2,江晓兵2   

  1. 1广州中医药大学第一临床医学院,广东省广州市  5104052广州中医药大学第一附属医院,广东省广州市  510405
  • 出版日期:2018-01-28 发布日期:2018-01-28
  • 通讯作者: 江晓兵,博士,副主任医师,副教授,硕士研究生导师,广州中医药大学第一附属医院,广东省广州市 510405
  • 作者简介:黄学成,男,1988年生,广东省台山市人,汉族,广州中医药大学在读博士,主要从事脊柱伤病的基础与临床研究。
  • 基金资助:

    国家自然科学基金(81774338);广州中医药大学第一附属医院岭南特色诊疗技艺应用与推广项目(2016JY03)

Effect of cervical rotatory direction on the displacement of cervical disc and the volume of intervertebral foramen in a three-dimensional finite element model  

Huang Xue-cheng1, 2, Ye Lin-qiang2, Liang De2, Wang Qian-li2, Yu Wei-bo1, 2, Jiang Xiao-bing2   

  1. 1First Clinical Medicine School, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 2First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Online:2018-01-28 Published:2018-01-28
  • Contact: Jiang Xiao-bing, M.D., Associate chief physician, Associate professor, Master’s supervisor, First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Huang Xue-cheng, Studying for doctorate, First Clinical Medicine School, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81774338; the Application and Promotion Project of Characteristic Diagnosis and Treatment Technique of South of the Five Ridges of First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 2016JY03.

摘要:

文章快速阅读:

 
 
 
文题释义:
颈椎旋转手法:医者通过辅助患者摆放合理的体位而使患者颈椎到达弹性障碍区,进而在患者颈椎亚生理区施加一“高速、低幅度”的旋转扳动力,在此过程中常伴有“咔哒”声响。颈椎旋转手法多用于治疗慢性颈痛、颈肌筋膜炎、落枕等颈部疾患,同时也是治疗神经根型颈椎病的重要保守疗法之一。
三维有限元分析:利用数学近似的方法对真实物理系统(几何和载荷工况)进行模拟。利用简单而又相互作用的元素(即单元),就可以用有限数量的未知量去逼近无限未知量的真实系统。
 
摘要
背景:旋转手法治疗神经根型颈椎病可迅速缓解根性疼痛,但旋转方向失当可加重原有症状。
目的:利用颈椎三维有限元模型模拟旋转手法,探讨旋转方向对颈椎间盘位移和椎间孔容积的影响,为旋转手法治疗神经根型颈椎病的有效性和安全性提供依据。
方法:对1名25岁健康成年女性志愿者的颈椎进行CT扫描成像,应用Mimics10.01、Geomagic Studio、Solidworks 14.0等软件建立颈椎C5-6实体CAD模型,然后将模型导入Ansys Workbench 14.5软件进行有效性验证及手法模拟。在颈椎左侧屈位下分别向左、右侧旋转,模拟旋转手法实施,把各项力学参数代入三维有限元模型进行计算分析。即时显示手法作用时颈椎间盘位移和椎间孔容积的变化。
结果与结论:向左旋转时,椎间盘左侧后部向后位移0.46 mm,右侧后部向前位移0.77 mm,左侧椎间孔容积变小,右侧椎间孔容积变大;向右旋转时,椎间盘左侧后部向前位移0.71 mm,右侧后部向后位移    0.43 mm,左侧椎间孔容积变大,右侧椎间孔容积变小。因此,旋转侧椎间盘后部向后位移,旋转对侧椎间盘后部向前位移,旋转侧椎间孔容积变小,旋转对侧椎间孔容积变大,若使用旋转手法治疗神经根型颈椎病,应向健侧旋转。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0002-8009-0282(江晓兵)

关键词: 旋转手法, 神经根型颈椎病, 有限元分析, 旋转方向, 椎间盘位移, 椎间孔容积, 国家自然科学基金

Abstract:

BACKGROUND: Cervical spondylotic radiculopathy could be effectively treated by cervical rotatory manipulation, but the symptoms may be exacerbated when rotated to the wrong direction.

OBJECTIVE: To simulate the cervical rotatory manipulation in left/right rotation by three-dimensional finite element, and then investigate the effect of this manipulation on the displacement of cervical disc and the volume of intervertebral foramen so as to provide a basis for effectiveness and safety of cervical rotatory manipulation in treating cervical spondylotic radiculopathy.
METHODS: With Mimics10.01, Geomagic Studio and Solidworks 14.0 software, a three-dimensional geometric CAD model of C5-6 was developed from the CT scan images of a 25-year-old normal adult female. The model was imported into Ansys Workbench 14.5, and a three-dimensional finite element model was verified and simulated the cervical rotatory manipulation. The cervical rotatory manipulation was decomposed by principium of manipulation in left lateral flexion and rotated to the left/right side. The parameter of mechanics was analyzed with the finite element system. The change of displacement in cervical disc and volume in intervertebral foramen simultaneously were displayed during simulating the manipulation.
RESULTS AND CONCLUSION: In left lateral flexion and rotated to the left side, the posterior part of the left side of annulus fibers was expanded 0.46 mm into posterior, and the posterior part of the right side of annulus fibers was retracted 0.77 mm. The volume of left intervertebral foramen became small and the right side became large. However, in left lateral flexion and rotated to the right side, the posterior part of the left side of annulus fibers was retracted 0.71 mm, and the posterior part of the right side of annulus fibers was expanded 0.43 mm into posterior. The volume of left intervertebral foramen became large and the right side became small. Therefore, the posterior part of the rotated side of cervical disc was expanded into posterior, while the posterior part of the contralateral side of cervical disc was retracted. The volume of intervertebral foramen in rotated side became small, while the volume of intervertebral foramen in contralateral side became large. We should rotate to the contralateral side when cervical spondylotic radiculopathy was treated with cervical rotatory manipulation. 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Tissue Engineering, Biomechanics, Three-Dimensional Finite Element

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