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

Overview

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.

publication date

  • November 11, 2014

Research

keywords

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

Identity

PubMed Central ID

  • PMC4414690

Scopus Document Identifier

  • 84928352233

Digital Object Identifier (DOI)

  • 10.1002/jor.21389

PubMed ID

  • 25443362

Additional Document Info

volume

  • 30

issue

  • 4