期刊文献+

上颈椎不稳有限元模型的建立及分析

Establishment and Analysis of the Finite Element Model on Atlantoaxial Instability
下载PDF
导出
摘要 目的建立上颈椎不稳的三维有限元模型,并探索其临床治疗的意义。方法首先建立上颈椎正常的三维非线性有限元模型,在此基础上结合临床上的颈椎不稳病例,通过有限元软件的应用,建立上颈椎不稳的三维有限元模型并进行有限元分析。在屈、伸、侧屈、旋转等工况下,测量并比较上颈椎脱位模型与正常上颈椎模型的活动度(ROM)差异。结果所建上颈椎有限元模型外观清晰逼真,几何相似性良好。上颈椎不稳模型各个工况下的活动度与正常上颈椎模型相比明显增大,与体外生物力学实验结果基本吻合。结论有限元三维模型的建立提供了一种便捷而精确的方法。上颈椎不稳的非线性三维有限元模型能够较好地模拟临床病例,从而指导制定临床治疗策略。 Objective To establish the three-dimensional finite element model of atlantoaxial instability and explore its clinical significance. Methods By first establishing the three-dimensional nonlinear finite element model of the normal upper cervical spine, on the basis of which clinical cases of cervical vertebra instability were combined, the three-dimensional finite element model of the up-per cervical instability was established and finite element analysis was carried out through the application of the finite element software. In flexion, extension, lateral flexion, rotation and other conditions, the differences of activity between normal model and dislocation model were measured and compared. Results The established finite element model was clear in appearance and had good geometric similarity. The activity of the upper cervical instability model was increased apparently compared with the normal upper cervical spine model, which was consistent with the in vitro biomechanical experimental results. Conclusion The establishment of the three-dimen-sional finite element model provides a convenient and accurate method. The nonlinear three-dimensional finite element model of upper cervical instability can better simulate the clinical cases, so as to guide the clinical treatment strategy.
出处 《辽宁医学院学报》 CAS 2014年第5期46-48,I0004,共4页 Journal of Liaoning Medical University (LNMU) Bimonthly
基金 辽宁省教育厅资助项目 项目编号:L2011146
关键词 上颈椎 三维有限元模型 医学工程学 upper cervical spine three-dimensional finite element model medical engineering
  • 相关文献

参考文献5

  • 1Brolin K, von HolstH. Cervical injury inSweden : an ational sur-vey of patient data from 1987 to 1999 [ J]. In J Control Saf PromotBorttaget,2003,9:40-52.
  • 2Hussain M,Natarajan N. Screw angulation affects bone - screwstresses and bone graft load sharing in anterior cervical corpecto-my fusion with a rigid screw - plate construct: a finite elementmodel study [J]. Spine J, 2009,29 : 1016 -1023.
  • 3Imajo Y,Hiiragi L. Use of thefinite element method to study themechanism of spinal cord injury without radiological abnormalityin the cervical spine [ J]. Spine,2009, 34 (2) : 87 -93.
  • 4Finite element analysis of momentrotation relationships for humancervical spine [J]. J Biomech, 2006: 39189 -39193.
  • 5Initial stability of cervical spine fixation : predictive value of a fi-nite element model. Technical note [ J ]. J Neurosurg, 2002 ,97: 128 -134.

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部