Biomechanical research on different pairs of lumbar laminectomy with finite element analysis / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 465-469, 2012.
Article
in Zh
| WPRIM
| ID: wpr-271751
Responsible library:
WPRO
ABSTRACT
The finite element model of the intact lumbar spine (L1-L5) was set up to study the biomechanical changes of three different pairs of the lumbar laminectomy. The three-dimensional finite elements model of L1-L5 vertebrae structure was constructed by the combination of self-compiled software and Hyper Mesh. The finite element model was compared with the experimental data in vitro. The finite element model was modified of stenosis at L3-L4 and L4-L5 with the same boundary conditions and physical loads to study the motion and loading in the annulus changes at the surgical site as a result of surgical alteration. The study suggested that the removal of posterior lumbar spinal elements for the treatment of stenosis at L3-L4 and L4-L5 produced a graded increase in motion at the surgical site, with the greatest changes occurring in flexion-extension and axial rotation and that during lateral bending the amount of resection was only slightly affected. The data showed that for flexion-extension and axial rotation the increases in motion were correlated to the extent of posterior element removal. It is necessary to retain the greatest degree of posterior lumbar structures in thorough decompression, which can further reduce the postoperative intervertebral disc, facet degeneration.
Full text:
1
Index:
WPRIM
Main subject:
Spinal Stenosis
/
General Surgery
/
Biomechanical Phenomena
/
Computer Simulation
/
Diagnostic Imaging
/
Finite Element Analysis
/
Tomography, Spiral Computed
/
Laminectomy
/
Lumbar Vertebrae
/
Methods
Type of study:
Diagnostic_studies
Limits:
Adult
/
Humans
/
Male
Language:
Zh
Journal:
Journal of Biomedical Engineering
Year:
2012
Type:
Article