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Finite element analysis of the influence of three‐joint spinal complex on the change of the intervertebral disc bulge and height
Author(s) -
SzkodaPoliszuk Klaudia,
Żak Małgorzata,
Pezowicz Celina
Publication year - 2018
Publication title -
international journal for numerical methods in biomedical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 63
eISSN - 2040-7947
pISSN - 2040-7939
DOI - 10.1002/cnm.3107
Subject(s) - annulus (botany) , intervertebral disc , compression (physics) , anatomy , biomechanics , joint (building) , finite element method , materials science , spinal column , mechanics , intervertebral disk , structural engineering , lumbar , physics , medicine , engineering , composite material , surgery
This study evaluated the changes of height and bulging occurring in individual layers of the annulus fibrosus of the intervertebral disc for 3 load scenarios (axial compression, flexion, and extension). The numerical model of a single motion segment of the thoracic spine was analysed for 2 different configurations, ie, for the model of a physiological segment and a segment with the posterior column removed. In the physiological segment, all annulus fibrosus layers decrease in height regardless of the applied load, bulging outside the intervertebral disc. Removal of the posterior column increases mobility and disrupts the load transfer system, with the lamellae bulging into the intervertebral disc.