Three-dimensional finite element analysis of lumbar vertebra loaded by static stress and its biomechanical significance / 中华创伤杂志(英文版)
Chinese Journal of Traumatology
; (6): 153-156, 2009.
Article
in En
| WPRIM
| ID: wpr-239783
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To explore the mechanical behavior of lumbar spine loaded by stress and provide the mechanical basis for clinical analysis and judgement of lumbar spine fracture classification, mechanical distribution and static stress.</p><p><b>METHODS</b>By means of computer simulation method, the constructed lumbar spine three-dimensional model was introduced into three-dimensional finite element analysis by software Ansys 7.0. The lumbar spine mechanical behavior in different parts of the stress loading were calculated. Impact load is 0-8000 N. The peak value was 8000 N. The loading time is 0-40 minutes. The values of the main stress, stress distribution and the lumbar spine unit displacement in the direction of main stress were analyzed.</p><p><b>RESULTS</b>The lumbar spine model was divided into a total of 121 239 nodes, 112 491 units. It could objectively reflect the true anatomy of lumbar spine and its biomechanical behavior and obtain the end-plate images under different stress. The stress distribution on the lumbar intervertebral disc (L(3)-L(4)) under the axial, lateral flexion and extension stress, and the displacement trace of the corresponding processus articularis were analyzed.</p><p><b>CONCLUSION</b>It is helpful to analyze the stress distribution of lumbar spine and units displacement in static stress loading in the clinical research of lumbar spine injury and the distribution of internal stress.</p>
Full text:
1
Index:
WPRIM
Main subject:
Physiology
/
Sacrum
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Stress, Mechanical
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Biomechanical Phenomena
/
Finite Element Analysis
/
Lumbar Vertebrae
Limits:
Adult
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Female
/
Humans
Language:
En
Journal:
Chinese Journal of Traumatology
Year:
2009
Type:
Article