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Long-term follow-up (11 years plus) results of JRI (Furlong) total hip arthroplasty in young patients: cause for concern regarding acetabular cup?

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Abstract

We describe the clinical and radiological long-term outcomes of 77 primary total hip replacements in 69 patients using the fully hydroxyapatite-coated JRI (Furlong) total hip replacement. The total cases followed up were 77 hips, performed at a mean duration of 11 years and 2 months. Twelve hips could not be followed up for various reasons, which are discussed in the results section. The mean Harris hip score was 89. Seventeen acetabular cups were revised for aseptic loosening. Only one femoral stem was revised, for fracture. By Engh’s criteria there were a further two unstable cups with no symptoms, and all femoral stems were stable. Kaplan–Meier survivorship analysis revealed a survival of 98.8% for the femoral stem, 78.7% for the acetabular cup, and a combined survival of 77.8% for both components. Our findings suggest that the JRI (Furlong) hip gives a durable femoral stem implant fixation, whereas the prosthesis–bone interface achieved with the acetabular component is questionable.

Résumé

Le but de cette étude est d’évaluer les résultats à long terme d’une prothèse de type FURLONG revêtue d’hydroxy-apatite. Pour cela, les auteurs ont étudié le devenir clinique et radiologique de 77 prothèses totales de hanche implantées chez 69 patients en utilisant la prothèse de type Furlong recouverte d’hydroxy-apatite. Le temps d’implantation moyen a été de 11 ans et deux mois. Douze hanches n’ont pu être revues. Le score moyen de Harris a été de 89. 17 cupules acétabulaires ont été révisées pour décellement aseptique, une seule queue a été révisée pour fracture. Selon les critères de Engh, nous avons mis en évidence deux cupules instables, sans symptomatologie clinique. La courbe de survie selon la méthode de Kaplan Meier a montré une survie de 98,8% pour la pièce fémorale, 78,7% pour la cupule acétabulaire et 77,8% pour les deux composants. Notre étude nous permet de penser que la prothèse JRI de Furlong donne des résultats durables notamment en ce qui concerne les pièces fémorales. On peut par contre se poser quelques questions sur l’implant acétabulaire.

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Authors and Affiliations

  1. Birmingham Heartlands & Solihull Hospitals, Birmingham, UK

    D. K. Sharma & Stuart Brooks

  2. 169, Kineton Green Road, Solihull, West Midlands, B92 7EQ, UK

    D. K. Sharma

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  1. D. K. Sharma
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  2. Stuart Brooks
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Correspondence to D. K. Sharma.

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Sharma, D.K., Brooks, S. Long-term follow-up (11 years plus) results of JRI (Furlong) total hip arthroplasty in young patients: cause for concern regarding acetabular cup?. International Orthopaedics (SICOT) 30, 375–380 (2006). https://doi.org/10.1007/s00264-006-0083-1

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  • DOI: https://doi.org/10.1007/s00264-006-0083-1

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