Publication detail
In Situ Observation of Lubricant Film Formation in THR Considering Real Conformity: The Effect of Model Synovial Fluid Composition
NEČAS, D. VRBKA, M. REBENDA, D. GALLO, J. GALANDÁKOVÁ, A. WOLFOVÁ, L. KŘUPKA, I. HARTL, M.
Czech title
In-situ pozorování utváření mazacího filmu v náhradách kyčelního kloubu při uvažování reálné konformity: vliv složení modelové synoviální kapaliny
English title
In Situ Observation of Lubricant Film Formation in THR Considering Real Conformity: The Effect of Model Synovial Fluid Composition
Type
journal article in Web of Science
Language
en
Original abstract
The present paper explores the effect of synovial fluid composition on lubricant film formation in hip replacements. The measurements were realized utilizing pendulum hip joint simulator, while the film thickness was evaluated using optical interferometry. Contact couples consisted of metal and ceramic femoral heads articulating with glass acetabular cups. As the test lubricants, various model fluids were employed. Initially, static tests, aimed on the effect of material and load on adsorption, were conducted. It was found that adsorbed film thickness increases independently of the head material. Consequently, swinging flexion-extension experiments were realized, revealing that the film formation is substantially affected by composition of model fluid. The thickest film was observed when higher concentration of hyaluronic acid and phospholipids was applied.
Czech abstract
Tento článek objasňuje vliv složení synoviální kapaliny na formování mazacího filmu v kyčelních náhradách. Měření byla realizována s využitím kyvadlového simulátoru, přičemž tloušťka filmu byla vyhodnocena s využitím optické interferometrie. Kontaktní dvojice se skládaly z kovových a keramických femorálních hlavic artikulujících se skelněnými jamky. Jako testovací maziva byly využity různé modelové kapaliny. Nejprve byly realizovány statické testy zaměřené na vliv materiálu a zatížení na adsorpci proteinů. Bylo zjištěno, že tloušťka adsorbovaného filmu narůstá nezávisle na materiálu hlavice. Následně byly realizovány dynamické testy simulující flexi-extenzi, kdy se ukázalo, že formování filmu je významně ovlivněno složením modelové kapaliny. Nejtlustší film byl zaznamenán v případě kapaliny s vyšším obsahem kyseliny hyaluronové a fosfolipidů.
English abstract
The present paper explores the effect of synovial fluid composition on lubricant film formation in hip replacements. The measurements were realized utilizing pendulum hip joint simulator, while the film thickness was evaluated using optical interferometry. Contact couples consisted of metal and ceramic femoral heads articulating with glass acetabular cups. As the test lubricants, various model fluids were employed. Initially, static tests, aimed on the effect of material and load on adsorption, were conducted. It was found that adsorbed film thickness increases independently of the head material. Consequently, swinging flexion-extension experiments were realized, revealing that the film formation is substantially affected by composition of model fluid. The thickest film was observed when higher concentration of hyaluronic acid and phospholipids was applied.
Keywords in Czech
Náhrada kyčelního kloubu; mazací film; synoviální kapalina; kyselina hyaluoronová
Keywords in English
Total hip arthroplasty; lubricant film; synovial fluid; hyaluronic acid
Released
01.01.2018
Publisher
Elsevier Ltd.
Location
United Kingdom
ISSN
0301-679X
Volume
117
Number
1
Pages from–to
206–216
Pages count
11
BIBTEX
@article{BUT139210,
author="David {Nečas} and Martin {Vrbka} and David {Rebenda} and Ivan {Křupka} and Martin {Hartl},
title="In Situ Observation of Lubricant Film Formation in THR Considering Real Conformity: The Effect of Model Synovial Fluid Composition ",
year="2018",
volume="117",
number="1",
month="January",
pages="206--216",
publisher="Elsevier Ltd.",
address="United Kingdom",
issn="0301-679X"
}