Department of Orthopedics & Traumatology, University of Hong Kong, Pokfulam, Hong Kong SAR, China.
Department of Mechanical Engineering, Yeditepe University, Atasehir, Istanbul, Turkey.
Med Eng Phys. 2022 Dec;110:103911. doi: 10.1016/j.medengphy.2022.103911. Epub 2022 Oct 25.
Finite element analysis is a powerful tool that is often used to study the biomechanical response of the spine. The primary objective of this study was to illustrate the mechanical behavior of a previously proposed parametric CAD spine model in comparison with a segmented FSU model and the literature. In this study, two finite element models of the L4-L5 spinal level were developed from the same patient's CT scan data. The first was developed using well-known segmentation methods, whereas the second was developed from the new by using a novel parametric CAD model. Both models were subjected to the same loading and boundary conditions to perform flexion, extension, lateral bending and axial rotation motions. The segmented finite element model was observed to be in good agreement with the literature. The parametric finite element model results were also observed to be in good agreement with the segmented finite element model and with the literature except under extension.
有限元分析是一种强大的工具，常用于研究脊柱的生物力学响应。本研究的主要目的是说明以前提出的参数化 CAD 脊柱模型与分段 FSU 模型和文献的机械行为。在这项研究中，从同一患者的 CT 扫描数据中开发了两个 L4-L5 脊柱水平的有限元模型。第一个模型是使用众所周知的分割方法开发的，而第二个模型是使用新的参数化 CAD 模型开发的。两个模型都受到相同的加载和边界条件的作用，以进行弯曲、伸展、侧屈和旋转运动。分段有限元模型与文献中的观察结果吻合良好。参数有限元模型的结果也与分段有限元模型和文献中的观察结果吻合良好，除了在伸展时。
