Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material

Recently, metal on metal hip prostheses have been revived following excellent clinical results. However, the risk of wear diseases has not been removed yet. Fluid film formation is necessary for long term reliability of a total hip prosthesis because solid contact of the prosthesis induces serious w...

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Autores principales:	Kensei Tanaka, Daichi Uchijima, Kou Hasegawa, Takehiro Katori, Rina Sakai, Kiyoshi Mabuchi
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2013
Materias:	fluid film formation frictional coefficient radial clearance 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/4ddf773c6b8e430da88d1231b4420ba7
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spelling	oai:doaj.org-article:4ddf773c6b8e430da88d1231b4420ba72021-11-05T09:24:00ZLimitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material1881-219810.2474/trol.8.272https://doaj.org/article/4ddf773c6b8e430da88d1231b4420ba72013-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/8/5/8_272/_pdf/-char/enhttps://doaj.org/toc/1881-2198Recently, metal on metal hip prostheses have been revived following excellent clinical results. However, the risk of wear diseases has not been removed yet. Fluid film formation is necessary for long term reliability of a total hip prosthesis because solid contact of the prosthesis induces serious wear. However, the fluid film can be only formed under limited conditions together with an appropriate shape design. Radial clearance is also an important factor because the radius has an upper limit in the joint space. A radial clearance that is too small induces severe contact, whereas decreasing radial clearance enhances squeezed film formation. The most appropriate radial clearance currently remains unclear. We prepared some specimens with high accuracy of polishing, which were balls and cups of the Co-Cr-Mo alloy with a common radius of 16 mm and several radial clearances, 0.15-95.8 μm. Their lubricating ability was evaluated by a friction test using a pendulum machine. The frictional coefficient was a local minimum where the radial clearance was 20-30 μm. It was found that appropriate radial clearance of a total hip prosthesis with hard on hard material must exist within this range.Kensei TanakaDaichi UchijimaKou HasegawaTakehiro KatoriRina SakaiKiyoshi MabuchiJapanese Society of Tribologistsarticlefluid film formationfrictional coefficientradial clearancePhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 8, Iss 5, Pp 272-277 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluid film formation frictional coefficient radial clearance Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	fluid film formation frictional coefficient radial clearance Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kensei Tanaka Daichi Uchijima Kou Hasegawa Takehiro Katori Rina Sakai Kiyoshi Mabuchi Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
description	Recently, metal on metal hip prostheses have been revived following excellent clinical results. However, the risk of wear diseases has not been removed yet. Fluid film formation is necessary for long term reliability of a total hip prosthesis because solid contact of the prosthesis induces serious wear. However, the fluid film can be only formed under limited conditions together with an appropriate shape design. Radial clearance is also an important factor because the radius has an upper limit in the joint space. A radial clearance that is too small induces severe contact, whereas decreasing radial clearance enhances squeezed film formation. The most appropriate radial clearance currently remains unclear. We prepared some specimens with high accuracy of polishing, which were balls and cups of the Co-Cr-Mo alloy with a common radius of 16 mm and several radial clearances, 0.15-95.8 μm. Their lubricating ability was evaluated by a friction test using a pendulum machine. The frictional coefficient was a local minimum where the radial clearance was 20-30 μm. It was found that appropriate radial clearance of a total hip prosthesis with hard on hard material must exist within this range.
format	article
author	Kensei Tanaka Daichi Uchijima Kou Hasegawa Takehiro Katori Rina Sakai Kiyoshi Mabuchi
author_facet	Kensei Tanaka Daichi Uchijima Kou Hasegawa Takehiro Katori Rina Sakai Kiyoshi Mabuchi
author_sort	Kensei Tanaka
title	Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
title_short	Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
title_full	Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
title_fullStr	Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
title_full_unstemmed	Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material
title_sort	limitation of the lubricating ability of total hip prostheses with hard on hard sliding material
publisher	Japanese Society of Tribologists
publishDate	2013
url	https://doaj.org/article/4ddf773c6b8e430da88d1231b4420ba7
work_keys_str_mv	AT kenseitanaka limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial AT daichiuchijima limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial AT kouhasegawa limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial AT takehirokatori limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial AT rinasakai limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial AT kiyoshimabuchi limitationofthelubricatingabilityoftotalhipprostheseswithhardonhardslidingmaterial
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Limitation of the Lubricating Ability of Total Hip Prostheses with Hard on Hard Sliding Material

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