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


MeSH Major

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


  • 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

  • April 2015



  • Academic Article



  • 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

  • 7


  • 30


  • 4