Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

Abstract The aim of the study was to evaluate the biomechanical properties of a novel nonfused artificial vertebral body in treating lumbar diseases and to compare with those of the fusion artificial vertebral body. An intact finite element model of the L1–L5 lumbar spine was constructed and validat...

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Autores principales:	Jiantao Liu, Xijing He, Binbin Niu, Yin Yang, Yanzheng Gao, Jintao Xiu, Hongbo Wang, Yanbiao Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6b8c1481673c4464950387a2325aef68
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spelling	oai:doaj.org-article:6b8c1481673c4464950387a2325aef682021-12-02T10:48:31ZBiomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation10.1038/s41598-021-82086-72045-2322https://doaj.org/article/6b8c1481673c4464950387a2325aef682021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82086-7https://doaj.org/toc/2045-2322Abstract The aim of the study was to evaluate the biomechanical properties of a novel nonfused artificial vertebral body in treating lumbar diseases and to compare with those of the fusion artificial vertebral body. An intact finite element model of the L1–L5 lumbar spine was constructed and validated. Then, the finite element models of the fusion group and nonfusion group were constructed by replacing the L3 vertebral body and adjacent intervertebral discs with prostheses. For all finite element models, an axial preload of 500 N and another 10 N m imposed on the superior surface of L1. The range of motion and stress peaks in the adjacent discs, endplates, and facet joints were compared among the three groups. The ranges of motion of the L1–2 and L4–5 discs in flexion, extension, left lateral bending, right lateral bending, left rotation and right rotation were greater in the fusion group than those in the intact group and nonfusion group. The fusion group induced the greatest stress peaks in the adjacent discs and adjacent facet joints compared to the intact group and nonfusion group. The nonfused artificial vertebral body could better retain mobility of the surgical site after implantation (3.6°–8.7°), avoid increased mobility and stress of the adjacent discs and facet joints.Jiantao LiuXijing HeBinbin NiuYin YangYanzheng GaoJintao XiuHongbo WangYanbiao WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiantao Liu Xijing He Binbin Niu Yin Yang Yanzheng Gao Jintao Xiu Hongbo Wang Yanbiao Wang Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
description	Abstract The aim of the study was to evaluate the biomechanical properties of a novel nonfused artificial vertebral body in treating lumbar diseases and to compare with those of the fusion artificial vertebral body. An intact finite element model of the L1–L5 lumbar spine was constructed and validated. Then, the finite element models of the fusion group and nonfusion group were constructed by replacing the L3 vertebral body and adjacent intervertebral discs with prostheses. For all finite element models, an axial preload of 500 N and another 10 N m imposed on the superior surface of L1. The range of motion and stress peaks in the adjacent discs, endplates, and facet joints were compared among the three groups. The ranges of motion of the L1–2 and L4–5 discs in flexion, extension, left lateral bending, right lateral bending, left rotation and right rotation were greater in the fusion group than those in the intact group and nonfusion group. The fusion group induced the greatest stress peaks in the adjacent discs and adjacent facet joints compared to the intact group and nonfusion group. The nonfused artificial vertebral body could better retain mobility of the surgical site after implantation (3.6°–8.7°), avoid increased mobility and stress of the adjacent discs and facet joints.
format	article
author	Jiantao Liu Xijing He Binbin Niu Yin Yang Yanzheng Gao Jintao Xiu Hongbo Wang Yanbiao Wang
author_facet	Jiantao Liu Xijing He Binbin Niu Yin Yang Yanzheng Gao Jintao Xiu Hongbo Wang Yanbiao Wang
author_sort	Jiantao Liu
title	Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
title_short	Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
title_full	Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
title_fullStr	Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
title_full_unstemmed	Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
title_sort	biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/6b8c1481673c4464950387a2325aef68
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Biomechanical properties of a novel nonfusion artificial vertebral body for anterior lumbar vertebra resection and internal fixation

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