Original title: Degradace UHMWPE v komponentách kolenního kloubu
Translated title: UHMWPE failure in knee joint component
Authors: Franta, L. ; Jeníková, Z. ; Pražák, Josef ; Suchánek, J.
Document type: Papers
Conference/Event: Engineering mechanics 2006 : national conference with international participation, Svratka (CZ), 2006-05-15 / 2006-05-18
Year: 2006
Language: cze
Abstract: [cze] [eng]
Při „in vitrio“ simulaci aplikace endoprotézy kolenního kloubu bylo studováno opotřebení její PE-části při pomalém pohybu. Simulátor umožňoval kombinaci valivého a smykového pohybu. Při vzájemném pohybu kontaktních ploch kloubu dochází k produkci otěrových částí a povrch je tak nevratně deformován. Vzorky byly podrobovány testům po 1500000 cyklech jednak suché, jednak lubrikované destilovanou vodou. Byly vyhodnoceny příslušné změny povrchu. A simulation of realistic tribologic conditions in tests “in vitro”contributes significantly to the research in the field of joint replacements. Motion under low relative velocities of friction surfaces of knee joint replacements is studied. The simulator enabled combination of rolling and sliding motion of replacement components. During the experiment, numerous debris of UHMWPE component ares produced and the friction surface is irreversibly changed. Initially, the irregularities of tibial component are smoothed. Consequently, large amount of UHMWPE debris is released. Specimens were loaded for 15.105 cycles with dry or distilled water lubrication. The surface changes of specimens were evaluated.
Keywords: knee joint replacement; UHMWPE; wear particles
Project no.: CEZ:AV0Z20760514 (CEP), OC 096
Funding provider: GA MŠk
Host item entry: Engineering Mechanics 2006 : national conference with international participation : book of extended abstracts, ISBN 80-86246-27-2

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0139013

Permalink: http://www.nusl.cz/ntk/nusl-36137


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers