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

English Title

MAPPING OF LUBRICATING FILM THICKNESS IN HUMAN HIP JOINT REPLACEMENTS

Type

journal article - other

Language

en

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.

English 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

RIV year

2012

Released

12.12.2012

Publisher

MM Science Journal

Location

Praha

Pages from

378

Pages to

381

Pages count

4

URL

Documents

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",
  annote="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.",
  address="MM Science Journal",
  chapter="96674",
  institution="MM Science Journal",
  number="12",
  volume="2012",
  year="2012",
  month="december",
  pages="378--381",
  publisher="MM Science Journal",
  type="journal article - other"
}