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International Orthopaedics

, Volume 32, Issue 3, pp 317–323 | Cite as

Fifteen- to 20-year results of uncemented tapered fully porous-coated cobalt-chrome stems

  • Taek Rim YoonEmail author
  • Sung-Man Rowe
  • Myung-Sun Kim
  • Sang-Gwon Cho
  • Jong-Keun Seon
Original Paper

Abstract

In this paper, we evaluated the long-term results of uncemented total hip arthroplasties using tapered fully porous-coated cobalt-chrome stems (Autophor 900S). The average follow-up was 206 months in 127 hips (113 patients). The articulations of the joints were ceramic-on-polyethylene in 43 hips and ceramic-on-ceramic in 84. The survival rate of the stems at 17 years was 94.5%. A stable stem with bony ingrowth was identified in all 120 hips, excluding femoral revision cases (seven hips). The causes of the seven femoral revisions were aseptic loosening in four, infection in two, and stem fracture in one. No surgical intervention was performed for osteolysis or stress shielding. The Autophor 900S tapered fully porous-coated cobalt-chrome femoral stem revealed encouraging radiographic long-term stability.

Keywords

Femoral Component Heterotopic Ossification Aseptic Loosening Acetabular Component Bone Ingrowth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Nous avons évalué les résultats à long termes d’une prothèse totale de hanche non cimentée porous coated en chrome cobalt (Autophor 900S). Le suivi moyen a été de 206 mois pour 127 hanches (113 patients). Le couple de friction est un couple de friction céramique polyéthylène dans 43 hanches et céramique céramique dans 84 hanches. Le taux de survie à 17 ans de la pièce fémorale a été de 94.5%. Une stabilité de la pièce fémorale avec repousse osseuse a été mise en évidence dans 120 hanches en excluant les 7 cas de révision fémorale. L’origine de cette révision a été un descellement aseptique pour 4 d’entre elles, une infection pour deux d’entre elles, une fracture de la pièce fémorale pour l’une d’entre elle. Aucune intervention chirurgicale n’a été nécessaire du fait d’une ostéolyse ou d’un stress shielding. La prothèse Autophor 900S avec pièce fémorale chrome cobalt porous coated montre des résultats tout à fait encourageant avec une bonne stabilité à long terme.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Taek Rim Yoon
    • 1
    Email author
  • Sung-Man Rowe
    • 2
  • Myung-Sun Kim
    • 2
  • Sang-Gwon Cho
    • 1
  • Jong-Keun Seon
    • 1
  1. 1.Center for Joint DiseaseChonnam National University Hwasun HospitalGwang JuSouth Korea
  2. 2.Department of OrthopaedicsChonnam National University HospitalGwang JuSouth Korea

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