Effects of laminectomy and facetectomy on the stability of the lumbar motion segment.

Abstract:

:A ligamentous, nonlinear, sliding contact, three-dimensional finite element (FE) model of L2-L3 complex was developed to investigate the biomechanical effect of laminectomy with and without facetectomy. The L2-L3 FE model was validated against experimental study under various physiological loadings and found to match well with the experimental data. Four iatrogenic models (unilateral laminectomy, unilateral laminectomy with unilateral facetectomy, unilateral laminectomy with bilateral facetectomy and total bilateral laminectomy) were evaluated under flexion, extension, torsion, lateral bending, anterior and posterior shear load vectors to determine alterations in kinematics and annulus stress. Results show that total laminectomy with facetectomy induces considerable increase in motion and annulus stress, except for lateral bending, whereas unilateral laminectomy shows the least increases.

journal_name

Med Eng Phys

authors

Lee KK,Teo EC

doi

10.1016/j.medengphy.2003.11.006

subject

Has Abstract

pub_date

2004-04-01 00:00:00

pages

183-92

issue

3

eissn

1350-4533

issn

1873-4030

pii

S1350453303001978

journal_volume

26

pub_type

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