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Multicentre use of a porous tantalum monoblock acetabular component

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Abstract

The purpose of this study was to evaluate the minimum five-year prospective results from the multicentre use of a porous tantalum monoblock acetabular component for primary total hip arthroplasty (THA). A multicentre study was performed in 253 consecutive primary THAs in three separate surgical centres. All patients underwent identical postoperative protocols including radiological and clinical evaluation. The average preoperative total HHS score was 44.0 ± 13.8 and increased at one-year follow-up to 95.2 ± 4.8 (p  <0.05), remaining constant through the five-year follow-up at 97.0 ± 6.2 (p < 0.05). There was no radiographic evidence of gross polyethylene wear, progressive radiolucencies, osteolytic lesions, acetabular fracture, or component subsidence. From these results, we can recommend the continued use of this material for acetabular components in primary THA and that further review of the current multicentre population is warranted to determine the long-term durability of the acetabular composite.

Résumé

Le propos de cette étude est d'évaluer, à cinq ans de suivi, les résultats d'une étude prospective multicentrique sur l'utilisation de composants acétabulaires ou monobloc en tantalum lors de prothèses totales de hanche. Matériel et méthode: cette étude multicentrique concernait 253 prothèses de hanche consécutives dans trois centres différents. Tous les patients ont bénéficié du même protocole postopératoire incluant une étude radiologique et une évaluation clinique. Résultats: le score HHS postopératoire a été de 44.0 ± 13.8 et s'est amélioré à un an postopératoire à 95.2 ± 4.8 (p < 0,05). Ce score demeure constant à 5 années de suivi 97.0 ± 6.2 (p < 0,05). Il n'y a pas de signe sur les radiographies d'usure grossière du polyéthylène, ni de liserés, ni de lésions ostéolytiques, ni de fractures de l'accetabulum ou de migrations des composants. En conclusion, à partir de ces résultats, nous pouvons recommander l'utilisation de ce matériel pour les composants acétabulaires de prothèses totales de hanche. Néanmoins, il sera nécessaire de faire d'autres études afin d'évaluer cette évolution sur un plus long terme.

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Authors and Affiliations

  1. Orthopaedic Department, University of Ioannina, Medical School, Ioannina, 45110, Greece

    Th. A. Xenakis & K. S. Stafilas

  2. 2nd Orthopaedic Department, 1st I. K. A. Hospital, Athens, Greece

    G. A. Macheras & A. T. Kostakos

  3. Orthopaedic Department, University of Thessaly, Medical School, Larissa, Greece

    K. Bargiotas & K. N. Malizos

Authors
  1. Th. A. Xenakis
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  2. G. A. Macheras
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  3. K. S. Stafilas
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  4. A. T. Kostakos
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  5. K. Bargiotas
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  6. K. N. Malizos
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Correspondence to Th. A. Xenakis.

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Xenakis, T.A., Macheras, G.A., Stafilas, K.S. et al. Multicentre use of a porous tantalum monoblock acetabular component. International Orthopaedics (SICOT) 33, 911–916 (2009). https://doi.org/10.1007/s00264-008-0581-4

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  • DOI: https://doi.org/10.1007/s00264-008-0581-4

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