Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery

Abstract Pectus excavatum (PEX) is the most common chest deformity in children, which is usually corrected by using the minimally invasive Nuss method. The orthopedic effect of the Nuss operation is mainly evaluated by both the Haller index and the appearance of the chest wall configuration, which i...

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Autores principales:	Longhan Xie, Siqi Cai, Liang Xie, Gang Chen, Haiyu Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ebf230c4f6e848ea9a86dda569f02efe
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spelling	oai:doaj.org-article:ebf230c4f6e848ea9a86dda569f02efe2021-12-02T11:40:52ZDevelopment of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery10.1038/s41598-017-03622-y2045-2322https://doaj.org/article/ebf230c4f6e848ea9a86dda569f02efe2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03622-yhttps://doaj.org/toc/2045-2322Abstract Pectus excavatum (PEX) is the most common chest deformity in children, which is usually corrected by using the minimally invasive Nuss method. The orthopedic effect of the Nuss operation is mainly evaluated by both the Haller index and the appearance of the chest wall configuration, which is dependent on the operator’s clinical experience to a great extent. To improve the orthopedic effect, we proposed a novel method to individually design and optimize the shape of the Nuss bar and to advise its location as well as the incisions. By using the CT imaging data, the three-dimensional model of the PEX thoracic structure is reconstructed, which is further employed in finite element analysis to determine the operation plan. By referring to a healthy person who has similar chest dimensions to the PEX patient, the Nuss bar shape is designed, and according to the finding that the healthy chest wall boundary is almost convex with positive curvature, the Nuss bar shape is tuned to be a convex curve to ensure the orthopedic effect. Finite element analysis is employed to analyze the orthopedic effect and to determine the incision position of the Nuss bar. Experiments were carried out to verify the orthopedic effect of the customized Nuss bar, which showed that this method is more accurate and individualized, compared to conventional methods.Longhan XieSiqi CaiLiang XieGang ChenHaiyu ZhouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Longhan Xie Siqi Cai Liang Xie Gang Chen Haiyu Zhou Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
description	Abstract Pectus excavatum (PEX) is the most common chest deformity in children, which is usually corrected by using the minimally invasive Nuss method. The orthopedic effect of the Nuss operation is mainly evaluated by both the Haller index and the appearance of the chest wall configuration, which is dependent on the operator’s clinical experience to a great extent. To improve the orthopedic effect, we proposed a novel method to individually design and optimize the shape of the Nuss bar and to advise its location as well as the incisions. By using the CT imaging data, the three-dimensional model of the PEX thoracic structure is reconstructed, which is further employed in finite element analysis to determine the operation plan. By referring to a healthy person who has similar chest dimensions to the PEX patient, the Nuss bar shape is designed, and according to the finding that the healthy chest wall boundary is almost convex with positive curvature, the Nuss bar shape is tuned to be a convex curve to ensure the orthopedic effect. Finite element analysis is employed to analyze the orthopedic effect and to determine the incision position of the Nuss bar. Experiments were carried out to verify the orthopedic effect of the customized Nuss bar, which showed that this method is more accurate and individualized, compared to conventional methods.
format	article
author	Longhan Xie Siqi Cai Liang Xie Gang Chen Haiyu Zhou
author_facet	Longhan Xie Siqi Cai Liang Xie Gang Chen Haiyu Zhou
author_sort	Longhan Xie
title	Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
title_short	Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
title_full	Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
title_fullStr	Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
title_full_unstemmed	Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery
title_sort	development of a computer-aided design and finite-element analysis combined method for customized nuss bar in pectus excavatum surgery
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ebf230c4f6e848ea9a86dda569f02efe
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Development of a computer-aided design and finite-element analysis combined method for customized Nuss bar in pectus excavatum surgery

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