Publication detail

MAPPING OF LUBRICATING FILM THICKNESS IN HUMAN HIP JOINT REPLACEMENTS

BOSÁK, D. LAŠTŮVKA, J. VRBKA, M. NÁVRAT, T. HARTL, M. KŘUPKA, I.

Original Title

MAPPING OF LUBRICATING FILM THICKNESS IN HUMAN HIP JOINT REPLACEMENTS

Type

journal article - other

Language

English

Original Abstract

This paper describes experimental mapping of lubricating film thickness and mechanism of its forming in contact of CoCrMo femoral head with a diameter of 28 mm and a glass disc with presence of bovine serum as a substitute of synovial fluid occurred in a natural joint. The contact area was illuminated by a xenon lamp and recorded by a high-speed camera. The load applied to the contact area was 5 N corresponding with the contact pressure of 271 MPa. Obtained data was evaluated by a thin film colorimetric interferometry. A pure rolling and partial sliding measurements were examined. From observed interferograms is apparent the deposition of proteins to the glass disc and femoral head surfaces, denaturation and formation of protein aggregations affecting the residual lubricating film thickness. The basic mechanisms of protein film forming were brought out and it is apparent that forming of protein lubricating film is a complex mechanism containing more influences.

Keywords

Biotribology, Bovine serum, Film thickness, Artificial hip joint, Colorimetric interferometry

Authors

BOSÁK, D.; LAŠTŮVKA, J.; VRBKA, M.; NÁVRAT, T.; HARTL, M.; KŘUPKA, I.

RIV year

2012

Released

12. 12. 2012

Publisher

MM Science Journal

Location

Praha

ISBN

1803-1269

Periodical

MM Science Journal

Year of study

2012

Number

12

State

Czech Republic

Pages from

378

Pages to

381

Pages count

4

URL

http://www.mmscience.eu/archives/MM_Science_201216.pdf

BibTex

@article{BUT96674,
  author="Dalibor {Bosák} and Jan {Laštůvka} and Martin {Vrbka} and Tomáš {Návrat} and Martin {Hartl} and Ivan {Křupka}",
  title="MAPPING OF LUBRICATING FILM THICKNESS IN HUMAN HIP JOINT REPLACEMENTS",
  journal="MM Science Journal",
  year="2012",
  volume="2012",
  number="12",
  pages="378--381",
  issn="1803-1269",
  url="http://www.mmscience.eu/archives/MM_Science_201216.pdf"
}