Stress Analysis of Artificial Knee Joints under Flexion and Rotation

3-D finite element models of two types of PS type knee prostheses were constructed using their CAD data with use of a nonlinear spring model and an analytical load data for deep squatting. PS-type1 model was formerly used in total knee arthroplasty, and PS-type2 model is the latest version with a mo...

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Autores principales:	Mitsugu Todo, Yuji Takahashi, Ryuji Nagamine
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2008
Materias:	total knee arthroplasty uhmwpe insert deep flexion finite element analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/9103beecd22a4abd82b4dfaefb46d4b2
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spelling	oai:doaj.org-article:9103beecd22a4abd82b4dfaefb46d4b22021-11-05T09:29:08ZStress Analysis of Artificial Knee Joints under Flexion and Rotation1881-219810.2474/trol.3.211https://doaj.org/article/9103beecd22a4abd82b4dfaefb46d4b22008-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/3/3/3_3_211/_pdf/-char/enhttps://doaj.org/toc/1881-21983-D finite element models of two types of PS type knee prostheses were constructed using their CAD data with use of a nonlinear spring model and an analytical load data for deep squatting. PS-type1 model was formerly used in total knee arthroplasty, and PS-type2 model is the latest version with a modified design of post structure. Stress analysis was then performed by an explicit finite element method under continuous flexion motion from 0 to 135 degrees with internal rotation up to 10 degrees. It was shown that the post/cam contact starts at about 65 degrees of flexion, and the equivalent stress rapidly increases due to the contact. Severe stress concentration is also generated on the Post surface due to the post/cam contact. This kind of stress concentration may cause damage and failure of the post. It was clearly shown that the design modification applied to PS-type2 effectively reduced the stress concentration of the post.Mitsugu TodoYuji TakahashiRyuji NagamineJapanese Society of Tribologistsarticletotal knee arthroplastyuhmwpe insertdeep flexionfinite element analysisPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 3, Iss 3, Pp 211-215 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	total knee arthroplasty uhmwpe insert deep flexion finite element analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	total knee arthroplasty uhmwpe insert deep flexion finite element analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Mitsugu Todo Yuji Takahashi Ryuji Nagamine Stress Analysis of Artificial Knee Joints under Flexion and Rotation
description	3-D finite element models of two types of PS type knee prostheses were constructed using their CAD data with use of a nonlinear spring model and an analytical load data for deep squatting. PS-type1 model was formerly used in total knee arthroplasty, and PS-type2 model is the latest version with a modified design of post structure. Stress analysis was then performed by an explicit finite element method under continuous flexion motion from 0 to 135 degrees with internal rotation up to 10 degrees. It was shown that the post/cam contact starts at about 65 degrees of flexion, and the equivalent stress rapidly increases due to the contact. Severe stress concentration is also generated on the Post surface due to the post/cam contact. This kind of stress concentration may cause damage and failure of the post. It was clearly shown that the design modification applied to PS-type2 effectively reduced the stress concentration of the post.
format	article
author	Mitsugu Todo Yuji Takahashi Ryuji Nagamine
author_facet	Mitsugu Todo Yuji Takahashi Ryuji Nagamine
author_sort	Mitsugu Todo
title	Stress Analysis of Artificial Knee Joints under Flexion and Rotation
title_short	Stress Analysis of Artificial Knee Joints under Flexion and Rotation
title_full	Stress Analysis of Artificial Knee Joints under Flexion and Rotation
title_fullStr	Stress Analysis of Artificial Knee Joints under Flexion and Rotation
title_full_unstemmed	Stress Analysis of Artificial Knee Joints under Flexion and Rotation
title_sort	stress analysis of artificial knee joints under flexion and rotation
publisher	Japanese Society of Tribologists
publishDate	2008
url	https://doaj.org/article/9103beecd22a4abd82b4dfaefb46d4b2
work_keys_str_mv	AT mitsugutodo stressanalysisofartificialkneejointsunderflexionandrotation AT yujitakahashi stressanalysisofartificialkneejointsunderflexionandrotation AT ryujinagamine stressanalysisofartificialkneejointsunderflexionandrotation
_version_	1718444361694314497

Stress Analysis of Artificial Knee Joints under Flexion and Rotation

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