山东医药2018，Vol.58Issue(16)：5-8,4.DOI:10.3969/j.issn.1002-266X.2018.16.002
旋转手法中侧屈方向对颈椎间盘位移、内在应力的影响及意义
Effect of lateral bending position on displacement and intra-stress of cervical disc with cervical rotatory manipulation in three-dimensional element analysis
摘要
Abstract
Objective To simulate the cervical rotatory manipulation(CRM)in left/right lateral bending position by using the three-dimensional finite element,so as to investigate the effect of lateral bending position on the displacement and intra-stress of cervical disc when performing CRM.Methods With Mimics10.01,Geomagic Studio,and Solidworks 14.0 software,a three-dimensional finite element model of C 5-6 was developed from the CT scan images of a 25-year-old normal adult female.The model was imported into Ansys Workbench 14.5 to verify and simulate the CRM.The CRM was decom-posed by principium of manipulation in left/right lateral flexion and rotated to the right side.The parameter of mechanics was analyzed with the finite element system.The change of displacement and intra-stress distribution in cervical disc simul-taneously were displayed during simulating the manipulation.Results In left/right lateral bending position and rotated to the right side,the posterior part of the left side of cervical disc was all retracted.And the displacement was toward anteri-or,left lateral flexion(0.93 mm)was smaller than the right lateral flexion(1.12 mm).The intra-stress of cervical disc were focused on the posterior part of the right side and the left side in left /right lateral flexion,respectively,and the maxi-mum stress of left lateral bending(7.00 MPa)was smaller than that of the right lateral bending(8.19 MPa). Conclusion When the cervical vertebra is in the left lateral bending position and rotates to the right side, the effects on the displacement and intra-stress are smaller than that of the right lateral bending position.Therefore,the left lateral ben-ding position is more likely to protect the left side of cervical disc.When we treat cervical spondylotic radiculopathy with CRM,should let the patients rotate to the contralateral side with lateral flexion to the ipsilateral side.In this way,it can al-leviate the symptom,and reduce the risk of secondary injury to the cervical disc of ipsilateral side at the same time.关键词
神经根型颈椎病/旋转手法/体位/位移/应力/三维有限元分析Key words
cervical spondylotic radiculopathy/rotatory manipulation/position/displacement/stress/three-dimen-sional element analysis分类
医药卫生引用本文复制引用
黄学成,叶林强,江晓兵,王千里,余伟波,梁德..旋转手法中侧屈方向对颈椎间盘位移、内在应力的影响及意义[J].山东医药,2018,58(16):5-8,4.基金项目
国家自然科学基金面上项目(81774338). （81774338）
