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The impact of surface and geometry on coefficient of friction of artificial hip joints
D. Choudhury, M. Vrbka, AB. Mamat, I. Stavness, CK. Roy, R. Mootanah, I. Krupka,
Jazyk angličtina Země Nizozemsko
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- keramika analýza MeSH
- kloubní náhrada typu kov-kov MeSH
- kyčelní kloub MeSH
- kyčelní protézy * MeSH
- lidé MeSH
- polyethyleny analýza MeSH
- rozhraní kost/implantát MeSH
- testování materiálů * MeSH
- tření * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Coefficient of friction (COF) tests were conducted on 28-mm and 36-mm-diameter hip joint prostheses for four different material combinations, with or without the presence of Ultra High Molecular Weight Polyethylene (UHMWPE) particles using a novel pendulum hip simulator. The effects of three micro dimpled arrays on femoral head against a polyethylene and a metallic cup were also investigated. Clearance played a vital role in the COF of ceramic on polyethylene and ceramic on ceramic artificial hip joints. Micro dimpled metallic femoral heads yielded higher COF against a polyethylene cup; however, with metal on metal prostheses the dimpled arrays significantly reduced the COF. In situ images revealed evidence that the dimple arrays enhanced film formation, which was the main mechanism that contributed to reduced friction.
Department of Mechanical Engineering University of Arkansas Fayetteville AR 72701 USA
Faculty of Science and Technology Anglia Ruskin University Chelmsford Essex CM1 1SQ UK
Citace poskytuje Crossref.org
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- $a Choudhury, Dipankar $u Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USA; Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, 616 69 Brno, Czech Republic. Electronic address: dipankar.choudhury78@gmail.com.
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- $a The impact of surface and geometry on coefficient of friction of artificial hip joints / $c D. Choudhury, M. Vrbka, AB. Mamat, I. Stavness, CK. Roy, R. Mootanah, I. Krupka,
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- $a Coefficient of friction (COF) tests were conducted on 28-mm and 36-mm-diameter hip joint prostheses for four different material combinations, with or without the presence of Ultra High Molecular Weight Polyethylene (UHMWPE) particles using a novel pendulum hip simulator. The effects of three micro dimpled arrays on femoral head against a polyethylene and a metallic cup were also investigated. Clearance played a vital role in the COF of ceramic on polyethylene and ceramic on ceramic artificial hip joints. Micro dimpled metallic femoral heads yielded higher COF against a polyethylene cup; however, with metal on metal prostheses the dimpled arrays significantly reduced the COF. In situ images revealed evidence that the dimple arrays enhanced film formation, which was the main mechanism that contributed to reduced friction.
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- $a Mamat, Azuddin Bin $u Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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