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Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis

Component alignment is one of the most crucial factors affecting total knee arthroplasty’s clinical outcome and survival. This study aimed to investigate how coronal, sagittal, and transverse malalignment affects the mechanical behavior of the tibial insert and to determine a suitable alignment tole...

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Autores principales: Luan, Yichao, Wang, Huizhi, Fang, Chaohua, Zhang, Min, Li, Junwei, Zhang, Ningze, Liu, Bolun, Su, Jian, Cheng, Cheng-Kung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10098169/
https://www.ncbi.nlm.nih.gov/pubmed/37064225
http://dx.doi.org/10.3389/fbioe.2023.1148914
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author Luan, Yichao
Wang, Huizhi
Fang, Chaohua
Zhang, Min
Li, Junwei
Zhang, Ningze
Liu, Bolun
Su, Jian
Cheng, Cheng-Kung
author_facet Luan, Yichao
Wang, Huizhi
Fang, Chaohua
Zhang, Min
Li, Junwei
Zhang, Ningze
Liu, Bolun
Su, Jian
Cheng, Cheng-Kung
author_sort Luan, Yichao
collection PubMed
description Component alignment is one of the most crucial factors affecting total knee arthroplasty’s clinical outcome and survival. This study aimed to investigate how coronal, sagittal, and transverse malalignment affects the mechanical behavior of the tibial insert and to determine a suitable alignment tolerance on the coronal, sagittal, and transverse planes. A finite element model of a cruciate-retaining knee prosthesis was assembled with different joint alignments (−10°, −7°, −5°, −3°, 0°, 3°, 5°, 7°, 10°) to assess the effect of malalignment under gait loading. The results showed that varus or valgus, extension, internal rotation, and excessive external rotation malalignments increased the maximum Von Mises stress and contact pressure on the tibial insert. The mechanical alignment tolerance of the studied prosthesis on the coronal, sagittal, and transverse planes was 3° varus to 3° valgus, 0°–10° flexion, and 0°–5° external rotation, respectively. This study suggests that each prosthesis should include a tolerance range for the joint alignment angle on the three planes, which may be used during surgical planning.
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spelling pubmed-100981692023-04-14 Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis Luan, Yichao Wang, Huizhi Fang, Chaohua Zhang, Min Li, Junwei Zhang, Ningze Liu, Bolun Su, Jian Cheng, Cheng-Kung Front Bioeng Biotechnol Bioengineering and Biotechnology Component alignment is one of the most crucial factors affecting total knee arthroplasty’s clinical outcome and survival. This study aimed to investigate how coronal, sagittal, and transverse malalignment affects the mechanical behavior of the tibial insert and to determine a suitable alignment tolerance on the coronal, sagittal, and transverse planes. A finite element model of a cruciate-retaining knee prosthesis was assembled with different joint alignments (−10°, −7°, −5°, −3°, 0°, 3°, 5°, 7°, 10°) to assess the effect of malalignment under gait loading. The results showed that varus or valgus, extension, internal rotation, and excessive external rotation malalignments increased the maximum Von Mises stress and contact pressure on the tibial insert. The mechanical alignment tolerance of the studied prosthesis on the coronal, sagittal, and transverse planes was 3° varus to 3° valgus, 0°–10° flexion, and 0°–5° external rotation, respectively. This study suggests that each prosthesis should include a tolerance range for the joint alignment angle on the three planes, which may be used during surgical planning. Frontiers Media S.A. 2023-03-30 /pmc/articles/PMC10098169/ /pubmed/37064225 http://dx.doi.org/10.3389/fbioe.2023.1148914 Text en Copyright © 2023 Luan, Wang, Fang, Zhang, Li, Zhang, Liu, Su and Cheng. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Bioengineering and Biotechnology
Luan, Yichao
Wang, Huizhi
Fang, Chaohua
Zhang, Min
Li, Junwei
Zhang, Ningze
Liu, Bolun
Su, Jian
Cheng, Cheng-Kung
Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title_full Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title_fullStr Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title_full_unstemmed Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title_short Mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—A finite element analysis
title_sort mechanical alignment tolerance of a cruciate-retaining knee prosthesis under gait loading—a finite element analysis
topic Bioengineering and Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10098169/
https://www.ncbi.nlm.nih.gov/pubmed/37064225
http://dx.doi.org/10.3389/fbioe.2023.1148914
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