Open AccessStress-strain distribution in intact L4-L5 vertebrae under the influence of physiological movements: A finite element (FE) investigation
Author(s) -
Devismita Sanjay,
Neeraj Kumar,
Souptick Chanda
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1206/1/012024
Subject(s) - torsion (gastropod) , finite element method , structural engineering , materials science , intervertebral disc , compression (physics) , biomechanics , stress–strain curve , deformation (meteorology) , stress (linguistics) , anatomy , composite material , engineering , medicine , linguistics , philosophy
This study is aimed at finding the stress and strain distribution in functional spinal unit of L4-L5 occurring due to physiological body movements under five loading conditions, namely compression, flexion, extension, lateral bending and torsion. To this purpose, 3D finite element (FE) model has been generated using 4-noded unstructured tetrahedral elements considered both for bones and intervertebral disc, and 1D tension-only spring elements for ligaments. The analyses were performed for a compression load of 500 N and for other load cases, a moment of 10 N-m along with a preload of 500 N was applied. The model was validated against in-vitro experimental data obtained from literature and FE analysis data for a range of motion (RoM) corresponding to various loading conditions. The highest stress was predicted in the case of torsion though the angular deformation was highest in case of flexion.