Reproducing Morphological Features Of Intervertebral Disc Using Finite Element Modeling To Predict The Course Of Cervical Spine Dorsopathy

IF 0.2 Q4 MEDICINE, GENERAL & INTERNAL
E. Yakovlev, A. Ovsepyan, A. A. Smirnov, A. A. Safronova, D. Starchik, S. A. Zhivolupov, Y. Vasil'ev, S. Dydykin
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引用次数: 3

Abstract

Study objective — To evaluate how morphological features of intervertebral disc would affect the outcomes of finite element modeling of axial load in the cervical spine, C3-C5, in order to predict the risk of occurrence and course of dorsopathies. Material and Methods — Three-dimensional models of the cervical spine vertebrae were generated from the computed tomography data of a volunteer (24 years old male without detected pathology of his neck). Intervertebral disc models were developed in two configurations. For each model, we performed a finite element investigation of the stress-strain state with the same loading conditions. The load-displacement curves were compared with the experimental data generated from the results of previously conducted in vitro experiments. Results — The maximum and mean displacement values for the isotropic model were 1.15 mm and 0.73 ± 0.45 mm, respectively. For anisotropic model, maximum and mean displacement values were 0.86 mm and 0.47 ± 0.24 mm, correspondingly. Predicted displacement values for both models matched the experimental data fairly well. Stress profiles of intervertebral discs and stress diagrams of facet joints were calculated. Conclusion — The proposed geometric and constitutive configurations of the intervertebral disc take into account specific morphological features at low computational costs, thereby facilitating the modeling of degenerative disc changes.
利用有限元模型再现椎间盘形态特征预测颈椎后倾的病程
研究目的-评估椎间盘形态特征如何影响颈椎(C3-C5)轴向载荷有限元建模的结果,以预测腰背病变发生的风险和病程。材料和方法:根据一名志愿者(24岁男性,未发现颈部病变)的计算机断层扫描数据生成颈椎椎体的三维模型。椎间盘模型分为两种构型。对于每个模型,我们在相同的加载条件下对应力-应变状态进行了有限元研究。将载荷-位移曲线与先前体外实验结果的实验数据进行比较。结果-各向同性模型的最大和平均位移值分别为1.15 mm和0.73±0.45 mm。各向异性模型最大位移值为0.86 mm,平均位移值为0.47±0.24 mm。两种模型的预测位移值与实验数据吻合较好。计算椎间盘应力分布图和关节突关节应力图。结论:椎间盘的几何和本构结构考虑了特定的形态特征,计算成本低,从而促进了椎间盘退行性变化的建模。
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来源期刊
Russian Open Medical Journal
Russian Open Medical Journal MEDICINE, GENERAL & INTERNAL-
CiteScore
0.90
自引率
0.00%
发文量
39
期刊介绍: Russian Open Medical Journal (RusOMJ) (ISSN 2304-3415) is an international peer reviewed open access e-journal. The website is updated quarterly with the RusOMJ’s latest original research, clinical studies, case reports, reviews, news, and comment articles. This Journal devoted to all field of medicine. All the RusOMJ’s articles are published in full on www.romj.org with open access and no limits on word counts. Our mission is to lead the debate on health and to engage, inform, and stimulate doctors, researchers, and other health professionals in ways that will improve outcomes for patients. The RusOMJ team is based mainly in Saratov (Russia), although we also have editors elsewhere in Russian and in other countries.
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