Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc

SUMMARY: Lumbar disc herniation is considered to be the main pathological factor for the common clinical disease of low back pain. Biomechanical factor is an important cause of lumbar disc herniation, so it is urgent to analyze the stress/strain behavior of intervertebral disc under different loadin...

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Autores principales:	Liu,Qing, Liu,Bing, Zhang,Kun-Peng, Zhang,Tao, Zhang,Chun-Qiu, Li,Kun, Sun,Yan-Fang
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2020
Materias:	Lumbar disc herniation Fatigue Forward flexion Internal displacement Optimized DIC technique
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022020000601597
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spelling	oai:scielo:S0717-950220200006015972020-10-30Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral DiscLiu,QingLiu,BingZhang,Kun-PengZhang,TaoZhang,Chun-QiuLi,KunSun,Yan-Fang Lumbar disc herniation Fatigue Forward flexion Internal displacement Optimized DIC technique SUMMARY: Lumbar disc herniation is considered to be the main pathological factor for the common clinical disease of low back pain. Biomechanical factor is an important cause of lumbar disc herniation, so it is urgent to analyze the stress/strain behavior of intervertebral disc under different loading condition. Slow repetitive loading is considered to be an important factor of spine and disc injuries, and the effect of fatigue load on internal displacement in the intervertebral disc was investigated by applying the optimized digital image correlation technique in this study. The first finding was that fatigue load had a significant effect on the displacement distribution in the intervertebral disc under compression. Superficial AF exhibited the largest axial displacements before fatigue load, while it exhibited the smallest axial displacements after fatigue load. Inner AF exhibited slightly smaller radial displacements than outer AF before fatigue load, while it exhibited significantly greater radial displacements than outer AF displacements after fatigue load. The second finding was that fatigue load had a certain effect on the internal displacement distribution in the flexed intervertebral disc under compression. Middle AF exhibited the smallest axial displacements before fatigue load, while deep AF exhibited the smallest axial displacements after fatigue load. The radial displacement distribution did not change before and after fatigue load, as the radial displacement in outer AF was the smallest, while the radial displacement in inner AF was the largest. The third finding was that with the increase in fatigue time and amplitude, the Young's modulus of the intervertebral disc increased significantly. This study can provide the basis for clinical intervertebral disc disease prevention and treatment? and is important for mechanical function evaluation of artificial intervertebral disc as well.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.38 n.6 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022020000601597en10.4067/S0717-95022020000601597
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Lumbar disc herniation Fatigue Forward flexion Internal displacement Optimized DIC technique
spellingShingle	Lumbar disc herniation Fatigue Forward flexion Internal displacement Optimized DIC technique Liu,Qing Liu,Bing Zhang,Kun-Peng Zhang,Tao Zhang,Chun-Qiu Li,Kun Sun,Yan-Fang Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
description	SUMMARY: Lumbar disc herniation is considered to be the main pathological factor for the common clinical disease of low back pain. Biomechanical factor is an important cause of lumbar disc herniation, so it is urgent to analyze the stress/strain behavior of intervertebral disc under different loading condition. Slow repetitive loading is considered to be an important factor of spine and disc injuries, and the effect of fatigue load on internal displacement in the intervertebral disc was investigated by applying the optimized digital image correlation technique in this study. The first finding was that fatigue load had a significant effect on the displacement distribution in the intervertebral disc under compression. Superficial AF exhibited the largest axial displacements before fatigue load, while it exhibited the smallest axial displacements after fatigue load. Inner AF exhibited slightly smaller radial displacements than outer AF before fatigue load, while it exhibited significantly greater radial displacements than outer AF displacements after fatigue load. The second finding was that fatigue load had a certain effect on the internal displacement distribution in the flexed intervertebral disc under compression. Middle AF exhibited the smallest axial displacements before fatigue load, while deep AF exhibited the smallest axial displacements after fatigue load. The radial displacement distribution did not change before and after fatigue load, as the radial displacement in outer AF was the smallest, while the radial displacement in inner AF was the largest. The third finding was that with the increase in fatigue time and amplitude, the Young's modulus of the intervertebral disc increased significantly. This study can provide the basis for clinical intervertebral disc disease prevention and treatment? and is important for mechanical function evaluation of artificial intervertebral disc as well.
author	Liu,Qing Liu,Bing Zhang,Kun-Peng Zhang,Tao Zhang,Chun-Qiu Li,Kun Sun,Yan-Fang
author_facet	Liu,Qing Liu,Bing Zhang,Kun-Peng Zhang,Tao Zhang,Chun-Qiu Li,Kun Sun,Yan-Fang
author_sort	Liu,Qing
title	Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
title_short	Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
title_full	Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
title_fullStr	Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
title_full_unstemmed	Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc
title_sort	effect of fatigue load on internal mechanical properties of the intervertebral disc
publisher	Sociedad Chilena de Anatomía
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022020000601597
work_keys_str_mv	AT liuqing effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT liubing effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT zhangkunpeng effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT zhangtao effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT zhangchunqiu effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT likun effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc AT sunyanfang effectoffatigueloadoninternalmechanicalpropertiesoftheintervertebraldisc
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Effect of Fatigue Load on Internal Mechanical Properties of the Intervertebral Disc

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