The 6-Year Migration Characteristics of a Hydroxyapatite-Coated Femoral Stem A Radiostereometric Analysis Study
2012 (English)In: The Journal of Arthroplasty, ISSN 0883-5403, E-ISSN 1532-8406, Vol. 27, no 7, 1344-1348 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 27, no 7, 1344-1348 p.
total hip arthroplasty, radiostereometric analysis, subsidence, stabilization
IdentifiersURN: urn:nbn:se:umu:diva-54077DOI: 10.1016/j.arth.2011.12.002ISI: 000307317100014PubMedID: 22266049OAI: oai:DiVA.org:umu-54077DiVA: diva2:515638