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Biomechanical modeling of spinal ligaments: finite element analysis of L4-L5 spinal segment

Author

Listed:
  • Shabnam Hamidrad
  • Masoud Abdollahi
  • Vahid Badali
  • Mohammad Nikkhoo
  • Sadegh Naserkhaki

Abstract

The complex mechanical structure of spine is usually simplified in finite element (FE) modes. In this study, different 3D models of L4-L5 spinal segment distinguished by their ligament modelling were developed (1D truss, 2D shell and 3D space truss elements). All models could be considered validated with respect to range of motion and intradiscal pressure, although their ligament stresses/forces were substantially different. The models with 2D shell and 3D space truss ligaments showed the stress distribution and identified the potential failure/injury locations in ligaments. The model with 3D space truss ligaments showed the stress/force direction (representing collagen fiber directions).

Suggested Citation

  • Shabnam Hamidrad & Masoud Abdollahi & Vahid Badali & Mohammad Nikkhoo & Sadegh Naserkhaki, 2021. "Biomechanical modeling of spinal ligaments: finite element analysis of L4-L5 spinal segment," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 24(16), pages 1807-1818, December.
    • Handle: RePEc:taf:gcmbxx:v:24:y:2021:i:16:p:1807-1818
    DOI: 10.1080/10255842.2021.1919885
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