Experimental study on viscoelasticity of spinal lumbar vertebrae (T12-S1) by simulating the operation of excising intervertebral disc and planting bone on back route and the operation of excising intervertebral disc and inserting fusion cage / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 212-216, 2002.
Article
in Zh
| WPRIM
| ID: wpr-263626
Responsible library:
WPRO
ABSTRACT
According to the physiological characteristics of lumbar vertebrae in Chinese, we designed and made a lumbar vertebral fusion cage of titanium and then engaged in its biomechanical test. T12-S1 of lumbar vertebrae from 18 fresh dead bodies were used. We measured the stress relaxation and the creep effects of the normal group (T12-S1 of intact lumbar vertebrae), the control group 1(simulating operation of excising intervertebral disc and planting bone on the back route) and the control group 2(simulating operation of excising intervertebral disc and inserting fusion cage). The data and stress, strain-time curves under the condition of constant stress and strain were obtained. Regression analysis yielded the reduced stress relaxation and creep functions. Finally, we analyzed and discussed the effects of the operation of excising intervertebral disc and planting bone on the back route and the operation of excising intervertebral disc and inserting fusion cage on the stability of spine.
Full text:
1
Index:
WPRIM
Main subject:
Physiology
/
Spinal Fusion
/
Spine
/
General Surgery
/
Titanium
/
Elasticity
/
Intervertebral Disc
/
Lumbar Vertebrae
Limits:
Humans
Language:
Zh
Journal:
Journal of Biomedical Engineering
Year:
2002
Type:
Article