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Does Osteoporosis Increase Early Subsidence of Cementless Double-Tapered Femoral Stem in Hip Arthroplasty?

  • Kee Hyung Rhyu, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University hospital at Gangdong, Seoul, South Korea
    • Corresponding Author InformationReprint requests: Kee Hyung Rhyu, MD, Department of Orthopaedic Surgery, Kyung Hee University Hospital at Gangdong, 149 Sangil-dong, Gangdong-Ku, Seoul, South Korea.
    • ,
  • Se Min Lee, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University Hospital, Seoul, South Korea
    • ,
  • Young Soo Chun, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University hospital at Gangdong, Seoul, South Korea
    • ,
  • Kang Il Kim, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University hospital at Gangdong, Seoul, South Korea
    • ,
  • Yoon Je Cho, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University Hospital, Seoul, South Korea
    • ,
  • Myung Chul Yoo, MD

      Affiliations

    • Department of Orthopaedic Surgery, Kyung Hee University hospital at Gangdong, Seoul, South Korea

Received 21 February 2011; accepted 24 October 2011. published online 19 December 2011.
Corrected Proof

Abstract 

Among 320 hip arthroplasties performed between January 2007 and March 2008, patients younger than 50 years old and patients older than 70 with a T-score at the proximal femur less than −2.5 made up the control and study group, respectively. There were 40 patients in each group. We measured stem subsidence, both digital and manual methods. Measurements were made from radiographs taken serially from 2 weeks to 1 year after surgery. The amount of mean subsidence for each group was not different, and all stems showed stable fixation in the final radiographs. Our study suggests that even in osteoporotic proximal femurs, press-fit fixation of double-tapered stems for hip arthroplasty can be safe and effective without excessive early subsidence.

Keywords: osteoporosis, subsidence, tapered stem, total hip arthroplasty

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 The Conflict of Interest statement associated with this article can be found at doi:10.1016/j.arth.2011.10.026.

PII: S0883-5403(11)00575-4

doi:10.1016/j.arth.2011.10.026

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