A comparative study on the mechanical behavior of intervertebral disc using hyperelastic finite element model.
A comparative study on the mechanical behavior of intervertebral disc using hyperelastic finite element model.
复制标题
利用超弹性有限元模型对椎间盘力学行为进行比较研究。
DOI：
10.3233/thc-171320
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Lixing Huang
中科院分区：
文献类型：
--
作者：
Feng Xie;Honghai Zhou;Wenju Zhao;Lixing Huang
背景
腰椎间盘突出症是最常见的与椎间盘病变有关的疾病之一，可导致剧烈的疼痛。为了找到更好的临床治疗和预防方案，以减轻脊柱退变引起的疼痛，必须对IVD的力学行为进行分析。
目的
本研究使用有限元素法分析健康与疝气之椎间盘的力学行为。
方法
为了比较IVD纤维环在不同载荷条件下的响应，采用超弹性和弹性本构有限元模型进行有限元分析。
结果
结果表明，超弹性有限元模型比弹性有限元模型具有更好的描述IVD力学行为的能力。从有限元模拟中可以发现，突出椎间盘的纤维环处的应力集中程度高于健康椎间盘。
结论
应力集中程度越高，损伤越大，越容易诱发腰椎间盘突出。数值算例表明，超弹性本构模型的有限元法对IVD的力学行为具有很好的分析能力。
BACKGROUND
Lumbar disc herniation may result in excruciating pain due to it being one of the most common diseases related to changes of intervertebral disc (IVD). In order to find a better clinical treatment and prevention scheme for relieving the pain caused by spine degeneration, the mechanical behavior analysis of IVD must be studied.
OBJECTIVE
A finite element method (FEM) is used in this study to analyze the mechanical behaviors of healthy and herniated IVD.
METHOD
In order to compare the responses of IVD under different loading conditions for the annulus fibrosus of IVD, the hyperelastic and elastic constitutive FE models were used in the FEM.
RESULTS
The comparison shows that hyperelastic FE models have a much better capability to describe the mechanical behaviors of the IVD than elastic FE models. It can be found from FE simulation that there was a higher stress concentration at the annulus fibrosus of the herniated disc than the healthy disc.
CONCLUSIONS
Higher stress concentration resulted in more damage and ease of bringing out lumbar disc herniation. Numerical examples of FE simulation indicate that the FEM with hyperelastic constitutive model has very good capability for analyzing the mechanical behaviors of IVD.
DOI：
10.2106/00004623-199403000-00012
发表时间：
1994-03-01
影响因子：
5.3
作者：
PANJABI, MM;OXLAND, TR;CRISCO, JJ
通讯作者：
CRISCO, JJ