基于Simpleware全颈椎三维有限元模型的构建与分析
发布时间：2018-10-18 18:09
【摘要】：目的利用Simpleware软件构建全颈椎三维有限元模型,并对模型进行验证和分析,为探讨颈椎损伤机制提供可靠模型。方法基于CT断层扫描图像,利用医学图像处理软件Simpleware、逆向工程软件Geomagic建立C1~7全颈椎三维实体模型,导入Hypermesh进行颈椎网格划分、添加韧带并引入小关节突接触关系等,建立C1~7全颈椎有限元模型,在ANSYS中模拟前屈、后伸、侧弯和轴向旋转工况下颈椎的生物力学性能。结果建立的模型准确可靠,在前屈、后伸、侧弯和轴向旋转时,活动范围与文献中离体实验和有限元分析结果相近。椎间盘应力集中在椎体受压侧,C4/5最易产生应力集中。结论建立的C1~7全颈椎有限元模型能够有效模拟颈椎的生物力学特性,为后续颈椎挥鞭样损伤的生物力学研究奠定良好的基础。
[Abstract]:Objective to construct a three-dimensional finite element model of cervical spine with Simpleware software, and to provide a reliable model for exploring the mechanism of cervical spine injury. Methods based on the CT tomography images, the 3D solid model of the whole cervical spine was established by using the medical image processing software Simpleware, reverse engineering software Geomagic. The cervical vertebrae mesh was divided into Hypermesh, the ligaments were added and the facet articular process contact relationship was introduced. A finite element model of the cervical spine was established to simulate the biomechanical properties of the cervical spine under the conditions of flexion, extension, lateral bending and axial rotation in ANSYS. Results the model is accurate and reliable, and the range of motion is close to the results of in vitro experiments and finite element analysis in the cases of forward flexion, extension, lateral bending and axial rotation. Intervertebral disc stress is concentrated on the compressed side of the vertebral body, and C 4 / 5 is most likely to produce stress concentration. Conclusion the finite element model of C1Z7 can effectively simulate the biomechanical characteristics of cervical vertebrae and lay a good foundation for further biomechanical study of whiplash injury of cervical vertebrae.
【作者单位】： 河南省国际中心医院中德脊柱外科中心;中国人民解放军一一三医院;浙江省人民检察院检察技术处;宁波市人民检察院检察技术处;German
【基金】：宁波市自然科学基金资助项目(2013A610263) 宁波市科技局社发一般项目(2013C50014)
【分类号】：R681.5;R318.01
[Abstract]:Objective to construct a three-dimensional finite element model of cervical spine with Simpleware software, and to provide a reliable model for exploring the mechanism of cervical spine injury. Methods based on the CT tomography images, the 3D solid model of the whole cervical spine was established by using the medical image processing software Simpleware, reverse engineering software Geomagic. The cervical vertebrae mesh was divided into Hypermesh, the ligaments were added and the facet articular process contact relationship was introduced. A finite element model of the cervical spine was established to simulate the biomechanical properties of the cervical spine under the conditions of flexion, extension, lateral bending and axial rotation in ANSYS. Results the model is accurate and reliable, and the range of motion is close to the results of in vitro experiments and finite element analysis in the cases of forward flexion, extension, lateral bending and axial rotation. Intervertebral disc stress is concentrated on the compressed side of the vertebral body, and C 4 / 5 is most likely to produce stress concentration. Conclusion the finite element model of C1Z7 can effectively simulate the biomechanical characteristics of cervical vertebrae and lay a good foundation for further biomechanical study of whiplash injury of cervical vertebrae.
【作者单位】： 河南省国际中心医院中德脊柱外科中心;中国人民解放军一一三医院;浙江省人民检察院检察技术处;宁波市人民检察院检察技术处;German
【基金】：宁波市自然科学基金资助项目(2013A610263) 宁波市科技局社发一般项目(2013C50014)
【分类号】：R681.5;R318.01
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