横韧带损伤上颈椎C0-C3不稳定节段的三维有限元分析  

Three-dimensional Finite Element Analysis of C0-C3 Unstable Segments of Upper Cervical Spine with Transverse Ligament Injury

作　　者：董自强 赵改平[1] 邢峰 杨加静 毕厚海 许海飞 赵庆华[3] 王宏杰 DONG Ziqiang;ZHAO Gaiping;XING Feng;YANG Jiajing;BI Houhai;XU Haifei;ZHAO Qinghua;WANG Hongjie(School of Medical Instrument and Food Engineering,University of Shanghai for Science and Technology,(Shanghai,200093);Department of Anesthesiology,Damao Banner Hospital,Baotou City,Inner Mongolia(Baotou,014500);Department of Orthopedics,Shanghai First People's Hospital(Shanghai,200080))

机构地区：[1]上海理工大学医疗器械与食品学院,上海200093 [2]内蒙古包头市达茂联合旗医院麻醉科,包头014500 [3]上海市第一人民医院骨科,上海200080

出　　处：《生物医学工程学进展》2019年第3期136-141,共6页Progress in Biomedical Engineering

基　　金：国家自然科学基金(11502146);上海市自然科学基金(15ZR1429600)

摘　　要：目的建立寰椎横韧带损伤上颈椎C0-C3不稳定节段的三维有限元模型,探究横韧带损伤对上颈椎关节活动度ROM(the range of motion)和椎骨应力分布的影响。方法基于CT图像数据结合临床寰椎横韧带损伤特征,建立人体寰椎横韧带损伤上颈椎不稳定的三维有限元模型,比较分析横韧带损伤后上颈椎在不同工况下的关节活动度及椎骨应力分布情况。结果横韧带损伤后上颈椎寰枢关节在前屈、后伸、侧弯和轴向旋转等工况下的关节活动度均比正常组有不同程度的增大,增值分别为:3.5°、4.8°、1.1°和4.7°;屈伸时横韧带损伤后模型最大应力均比无损模型的大。结论寰椎横韧带损伤后上颈椎模型相比正常模型稳定性差,符合横韧带损伤后的真实情况,建立的有限元模型可用于上颈椎生物力学特性的分析。Objective Establishing a three-dimensional finite element model of the unstable segments of the C0-C3 in the upper cervical spine with the transverse ligament injury of the atlas,and exploring the effect of transverse ligament injury on the range of motion of the upper cervical spine and the stress distribution of the vertebral body.Methods Based on CT image data combined with features of clinical transverse ligament injury,a three-dimensional finite element model of the upper cervical instability with human transverse ligament injury of the atlas was established.The range of motion of the upper cervical spine and the stress distribution of the vertebrae after transverse ligament injury were compared and analyzed.Results The range of motion of atlantoaxial joint in flexion,extension,lateral bending and axial rotation of the upper cervical spine after transverse ligament injury were increased to different degrees compared with the normal group,and the increment was 3.5°,4.8°,1.1°and 4.7°,respectively.The maximum stress of the model was larger than that of the nondestructive model after transverse ligament injury during flexor.Conclusions The upper cervical spine model after transverse ligament injury of atlas is less stable than the normal model,which accords with the real situation after transverse ligament injury.The established finite element model can be used for the analysis of biomechanical characteristics of upper cervical spine.

关 键 词：横韧带损伤 上颈椎 关节活动度 应力分布 

分 类 号：R687[医药卫生—骨科学]