Analysis of stress in spondylolysis of lumbar spine
- VernacularTitle:腰椎椎弓峡部裂的应力分析
- Author:
Zaifa SU
;
Aiping ZHANG
;
Riqi CHEN
- Publication Type:Journal Article
- Keywords:
lumbar isthmus/physiol;
models;
stresses;
biomechanics;
3-D finite element analysis
- From:
Orthopedic Journal of China
2006;0(15):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To investigate the biomechanical pathogenesis of lumbar spondylolysis,and to provide theoretical basis and scientific foundation for the treatment prevention of lumbar spondylolysis.[Method]The three dimension analytical method of finite element was used to set up a 3-D finite element model of whole lumbar vertebral column and to investigate the stress distribution of seven different posture in isthmus of lumbar spine.[Result]The stress of vertebral isthmus increased from L_(1~5) gradually.The concentration phenomenon of the stress prominently appeared in anteflexion and postextension,with the largest postextension position.[Conclusion]Spondylolysis may be caused by the long-term hazard stress on the lumbar isthmus,in high relation with postextension of lumbar spine.
