Send to:

Choose Destination
See comment in PubMed Commons below
J Arthroplasty. 2012 Aug;27(7):1344-1348.e1. doi: 10.1016/j.arth.2011.12.002. Epub 2012 Jan 21.

The 6-year migration characteristics of a hydroxyapatite-coated femoral stem: a radiostereometric analysis study.

Author information

  • 1Discipline of Orthopaedics and Trauma, University of Adelaide and Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, South Australia, Australia.


A prospective cohort of 30 patients undergoing primary total hip arthroplasty for treatment of osteoarthritis was enrolled in a study to characterize the migration behavior of a clinically successful cementless stem. At 6 years, the mean subsidence of the stem was 0.63 mm (range, -0.33 to 3.68 mm); the mean rotation into retroversion was 1.41° (range, -1.33° to 7.48°). No stems had additional subsidence of more than 0.25 mm between 6 months and 6 years. The resultant mean subsidence between 2 and 6 years was 0.03 mm, which is below the limit measurable by radiostereometric analysis. The data demonstrate that subsidence of this cementless stem occurs within the first 6 months, after which there is persistent stabilization.

Copyright © 2012 Elsevier Inc. All rights reserved.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk