Publication detail

The impact of surface and geometry on coefficient of friction of artificial hip joints

CHOUDHURY, D. VRBKA, M. MAMAT, A.B. STAVNESS, I. ROY, CH.K. MOOTANAH, R. KŘUPKA, I.

Original Title

The impact of surface and geometry on coefficient of friction of artificial hip joints

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Hip joint prosthesis; micro dimple; Coefficient of friction; Lubrication film formation; Size and clearance

Authors

CHOUDHURY, D.; VRBKA, M.; MAMAT, A.B.; STAVNESS, I.; ROY, CH.K.; MOOTANAH, R.; KŘUPKA, I.

Released

1. 8. 2017

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISBN

1751-6161

Periodical

Journal of the mechanical behavior of biomedical materials

Year of study

72

Number

8

State

Kingdom of the Netherlands

Pages from

192

Pages to

199

Pages count

8

URL

http://www.sciencedirect.com/science/article/pii/S1751616117301996

BibTex

@article{BUT137567,
  author="CHOUDHURY, D. and VRBKA, M. and MAMAT, A.B. and STAVNESS, I. and ROY, CH.K. and MOOTANAH, R. and KŘUPKA, I.",
  title="The impact of surface and geometry on coefficient of friction of artificial hip joints",
  journal="Journal of the mechanical behavior of biomedical materials",
  year="2017",
  volume="72",
  number="8",
  pages="192--199",
  doi="10.1016/j.jmbbm.2017.05.011",
  issn="1751-6161",
  url="http://www.sciencedirect.com/science/article/pii/S1751616117301996"
}