The Journal of Arthroplasty
Volume 25, Issue 7 , Pages 1083-1090, October 2010

Periprosthetic Bone Remodeling Using a Triple-Taper Polished Cemented Stem in Total Hip Arthroplasty

  • Aaron J. Buckland, MBBS, B Med Sci

      Affiliations

    • Department of Orthopaedics, St. Vincent's Hospital Melbourne, Victoria, Australia
    • ,
  • Michelle M. Dowsey, RN, BApplSc

      Affiliations

    • Department of Orthopaedics, St. Vincent's Hospital Melbourne, Victoria, Australia
    • University of Melbourne Department of Surgery, Victoria, Australia
    • ,
  • James D. Stoney, MBBS, FRACS, FAOrthA

      Affiliations

    • Department of Orthopaedics, St. Vincent's Hospital Melbourne, Victoria, Australia
    • University of Melbourne Department of Surgery, Victoria, Australia
    • ,
  • Andrew J. Hardidge, MBBS, FRACS, FAOrthA

      Affiliations

    • Department of Orthopaedics, St. Vincent's Hospital Melbourne, Victoria, Australia
    • ,
  • Kong Wah Ng, MBBS, MD, FRACP, FRCP

      Affiliations

    • Department of Endocrinology, St. Vincent's Hospital Melbourne, Victoria, Australia
    • University of Melbourne Department of Medicine, Victoria, Australia
    • ,
  • Peter F.M. Choong, MBBS, MD, FRACS, FAOrthA

      Affiliations

    • Department of Orthopaedics, St. Vincent's Hospital Melbourne, Victoria, Australia
    • University of Melbourne Department of Surgery, Victoria, Australia
    • Corresponding Author InformationReprint requests: Peter F. M. Choong, MBBS, MD, FRACS, FAOrthA, C/-Department of Orthopaedics, St Vincent's Hospital Melbourne, PO Box 2900, Fitzroy 3065, Victoria, Australia.

Received 20 January 2009; accepted 12 September 2009. published online 02 November 2009.

Abstract 

The triple-taper cemented femoral stem was developed to promote proximal femoral and calcar loading to minimize periprosthetic bone loss and aseptic loosening. Periprosthetic changes in bone mineral density in Gruen zones 1 to 7 were analyzed in 103 patients over a 2-year period using dual x-ray absorptiometry. There was a statistically significant decrease in bone mineral density in all Gruen zones, but was most marked in zones 1 and 7. Periprosthetic bone density was reduced significantly in the first 3 to 9 months, after which recovery of bone density occurred. Greater calcar bone loss was seen in women, patients with a low preoperative bone density, and patients with poor postoperative mobility. Age at surgery did not effect calcar bone loss.

Keywords: arthroplasty, triple taper stem, bone remodeling, DEXA, prospective

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 Benefits or funds were received from DePuy International Limited in partial or total support of the research material described in this article.

PII: S0883-5403(09)00443-4

doi:10.1016/j.arth.2009.09.003

The Journal of Arthroplasty
Volume 25, Issue 7 , Pages 1083-1090, October 2010

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