Hip dislocation increases roughness of oxidized zirconium femoral heads in total hip arthroplasty: an analysis of 59 retrievals. Academic Article uri icon

Overview

MeSH

  • Aged
  • Aged, 80 and over
  • Aluminum Oxide
  • Biocompatible Materials
  • Ceramics
  • Device Removal
  • Equipment Failure Analysis
  • Female
  • Humans
  • Male
  • Microscopy, Electron, Scanning
  • Middle Aged
  • Polyethylenes
  • Prosthesis Design
  • Prosthesis Failure
  • Zirconium

MeSH Major

  • Arthroplasty, Replacement, Hip
  • Hip Dislocation
  • Hip Prosthesis

abstract

  • The aims of this study were to assess damage on the surface of retrieved oxidized zirconium (OxZr) metal femoral heads, to measure surface roughness of scratches, and to evaluate the extent of surface effacement using scanning electron microscopy (SEM). Ceramic zirconia-toughened alumina heads were analyzed for comparison. OxZr femoral heads explanted for recurrent dislocation had the most severe damage (P<0.001). The median surface roughness of damaged OxZr femoral heads was 1.49μm, compared to 0.084μm for damaged ceramic heads and 0.052μm for undamaged OxZr (P<0.001). This may be of clinical concern because increased surface roughness has the potential to increase the wear of polyethylene liners articulating against these OxZr heads in THA. Copyright © 2014 Elsevier Inc. All rights reserved.

publication date

  • April 2015

has subject area

  • Aged
  • Aged, 80 and over
  • Aluminum Oxide
  • Arthroplasty, Replacement, Hip
  • Biocompatible Materials
  • Ceramics
  • Device Removal
  • Equipment Failure Analysis
  • Female
  • Hip Dislocation
  • Hip Prosthesis
  • Humans
  • Male
  • Microscopy, Electron, Scanning
  • Middle Aged
  • Polyethylenes
  • Prosthesis Design
  • Prosthesis Failure
  • Zirconium

Research

keywords

  • Journal Article

Identity

Language

  • eng

PubMed Central ID

  • PMC4414690

Digital Object Identifier (DOI)

  • 10.1016/j.arth.2014.10.036

PubMed ID

  • 25443362

Additional Document Info

start page

  • 713

end page

  • 717

volume

  • 30

number

  • 4