摘要
【目的】探索一种快速、准确的全颈椎三维有限元模型建立和验证的方法。【方法】以一尸体颈段脊柱标本为研究对象,对其进行CT扫描以建立一全颈椎三维有限元模型,分别对模型和标本施加相同载荷,比较各椎间运动范围,以验证模型的有效性。【结果】整个模型共有23612个实体单元,15200个壳/膜单元。利用比较模拟实验和实体标本实验结果的方法对模型的有效性进行了验证。【结论】该模型具有良好的生物逼真度,通过有限元结果与尸体试验结果对比,具有良好的一致性,探索出了一种有效的全颈椎三维有限元模型的建立和验证方法,可应用于活体全颈椎三维有限元模型的建立。
[Objective] To explore a faster and more precise method for the establishment and validation of three-dimensional finite element model of cervical spine. [Methods] A three-dimensional finite element model of cervical spine was established from the CT scan images of a cadaver cervical spine. The same load was applied on the model and the cadaver specimen. The model was validated by comparing the intersegmental ranges of motion. [Results]The model has 23,612 solid elements and 15,200 shell/membrane elements. The above method was used to validate the model. [Conclusion]The comparison between test results and simulation results indicate that the model has good bio-fidelity. Results of analysis of finite element and cadaver experiment have good coincidence. We have explored a new method for the establishment and validation of three-dimensional finite model of cervical spine and the method can be used to establish the model of living cervical spine.
出处
《医学临床研究》
CAS
2008年第3期389-392,共4页
Journal of Clinical Research
基金
湖南省自然科学基金资助项目06JJ4035)
湖南省科技厅计划项目资助项目2007FJ3037)
湖南省发展和改革委员会资助项目湘发改高计[2006773号])
