摘要
目的:建立青少年正常与Lenke 1型侧凸脊柱三维模型,利用有限元方法分析脊柱受力情况,观察并分析侧凸脊柱生物力学分布规律,用于评估脊柱侧凸的潜在发生机制。方法:收集内蒙古地区青少年正常胸腰CT资料,选择13岁正常青少年和15岁脊柱侧凸(胸主弯,Lenke 1型)青少年各一例,利用Mimics及Ansys软件分别对脊柱三维模型进行重建并进行有限元分析,测量胸腰段脊柱各部位应力集中部位及比较其差异。结果:正常脊柱应力、应变主要集中在中柱和后柱,侧凸脊柱应力应变主要集中在凹侧,椎间盘亦是如此。青少年正常脊柱应力主要集中在中柱和后柱部分,应变主要集中在椎间盘部分。青少年特发性脊柱侧凸(AIS)的应力集中在椎体弯曲的凹侧。纵观整个脊柱,从上端椎以上至下端椎以下,应力和应变的分布水平面移动,说明AIS患者在发展过程中存在椎体旋转,椎体旋转改变了应力与应变分布。结论:AIS的应力集中在脊柱弯曲的凹侧,应变主要集中在椎间盘部分,应力与应变在弯曲的凹侧最明显,且顶椎最明显。椎骨和椎间盘上的不对称载荷可能是导致侧凸起源和进展的原因之一。
Objective:A three-dimensional model of normal and Lenke1 scoliosis in adolescents was established.The finite element method was used to analyze the force of the spine,observe and analyze the biomechanical distribution of scoliosis,and evaluate the potential mechanism of scoliosis.Methods:Normal chest and waist CT data of adolescents in Inner Mongolia were collected.A 13-year-old normal adolescent and a 15-year-old scoliosis(thoracic lordosis,Lenke 1)were selected.Mimics and Ansys software to reconstruct the three-dimensional model of the spine and finite element analysis was performed to measure the stress concentration of each part of the thoracolumbar spine and compare their differences.Results:The finite element results showed that the stress and strain of the normal spine were mainly concentrated in the middle column and the posterior column,and the stress and strain of the scoliosis spine were mainly concentrated in the concave side,as was the intervertebral disc.The normal spinal stress of adolescents was mainly concentrated in the middle and posterior columns,and the strain(AIS)was mainly concentrated in the intervertebral discs.The stress of adolescent idiopathic scoliosis was concentrated on the concave side of the vertebral body curvature.Throughout the entire spine,from the upper cone to the lower cone,the distribution of stress and strain moved around the horizontal plane of the spine.It also showed that there was vertebral rotation during the development of the vertebral body of AIS patients.The rotation of the vertebral body changed the stress and strain distributed.Conclusion:The stress of AIS is concentrated on the concave side of the spine curvature,and the strain is mainly concentrated on the intervertebral disc portion,and the concave side of the curvature is the most obvious,that is,the apical vertebra is the most obvious.The asymmetric load on the vertebrae and intervertebral discs is one of the reasons for the source and progression of scoliosis.
作者
许阳阳
李筱贺
李志军
王一丹
和雨洁
王海燕
由博
Xu Yangyang;Li Xiaohe;Li Zhijun;Wang Yidan;He Yujie;Wang Haiyan;You Bo(Department of Rehabilitation,Changzhi People's Hospital,Changzhi 046000;Department of Anatomy,School of Basic Medicine,Inner Mongolia Medical University,Hohhot 010110;Graduate School,Inner Mongolia Medical University,Hohhot 010110;School of Aeronautical Engineering,Jilin Institute of Chemical Technology,Jilin 132022,China)
出处
《解剖学杂志》
CAS
2021年第2期140-146,共7页
Chinese Journal of Anatomy
基金
国家自然科学基金(81460330,81560348,81860383,81260269)
内蒙古自治区科技计划项目(2016,2019GG115)
内蒙古教育厅青年科技英才项目(njyt-15-b05)
内蒙古自治区科技创新引导项目(2017)
内蒙古自治区自然科学基金(2016ms08131,2020MS08124,2020LH08021)
内蒙古人社厅归国留学人员基金
内蒙古医科大学科技百万计划基金项目(YKD2017KJBW012)
内蒙古医科大学后续科研项目(2020)
内蒙古医科大学科技转化项目(YKD2020CGZH009),内蒙古自治区“草原英才”工程青年创新人才。
