Fluid absorption study in ultra-high molecular weight polyethylene (UHMWPE) sterilized and unsterilized acetabular cups

S. Affatato, C. Vandelli, B. Bordini, A. Toni

Research output: Contribution to journalArticle

Abstract

The weight gain due to fluid absorption was measured in γ-sterilized, ethylene oxide (ETO) gas-sterilized, and unsterilized ultra-high molecular weight (UHMW) polyethylene acetabular cups. After about 2 months the total average fluid absorption gain of the polyethylene cups was: 1.76 ± 0.45 mg (average ± standard deviation) for the unsterilized polyethylene cups, 2.81 ± 0.95 mg for the γ-sterilized polyethylene cups and 1.51 ± 0.34 for the ETO gas-sterilized polyethylene cups. There was little difference in fluid absorption between the sterilized and unsterilized specimens. In particular, the γ-sterilized acetabular cups absorbed more than the ETO gas-sterilized and the unsterilized cups. However, the weight gain was higher in serum compared with that in water.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume215
Issue number1
DOIs
Publication statusPublished - 2001

Keywords

  • Fluid absorption
  • Hip simulator
  • Polyethylene absorption
  • Serum absorption
  • Water absorption

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering
  • Medicine(all)

Fingerprint Dive into the research topics of 'Fluid absorption study in ultra-high molecular weight polyethylene (UHMWPE) sterilized and unsterilized acetabular cups'. Together they form a unique fingerprint.

  • Cite this