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Long term results of uncemented Judet hip endoprostheses

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Summary

We reviewed 94 patients in whom 113 Judet uncemented total hip endoprostheses had been inserted; 83 had a mean follow up of 10.8 years (range 6 to 13 years). The Merle dÁubigne and Harris hip scores were used for clinical evaluation. In the long term follow up, severe or moderate pain was present in 38.6% of hips. Radiographs were studied and radiolucent lines, and other evidence of loosening, were recorded. Twenty hips (24.1%) showed radiological signs of loosening of the acetabular cup and a displacement of more than 5 mm in 37.3%. The loosening rate of femoral stems was 32.5%, but only 8.4% showed subsidence. The cumulative survival rate at 6 years was 84.1%, decreasing to 55.1% after the eleventh year. Complications and other aspects of the outcome are discussed. Our results were on the whole not satisfactory and we cannot recommend this type of uncemented endoprosthesis for routine total hip replacement.

Résumé

Nous avons revu 94 patients chez qui 113 prothèses non cimentées de Judet ont été posées; 83 ont une durée moyenne d'observation de 10,8 ans (de 6 à 13 ans). Les échelles de Harris et de Merle d'Aubigné ont été utilisées pour l'évaluation clinique. A long terme, des douleurs modérées ou sévères étaient présentes dans 38,6% des hanches. L'étude radiographique a relevé les signes de descellement et notamment les liserés. Vingt hanches (24,1%) montraient des signes radiologiques de descellement de la cupule cotyloïdienne avec un déplacement de plus de 5 mm dans 37,5% des cas. La fréquence des descellements fémoraux était de 32,5% mais dans seulement 7 cas sur 83, il fut noté une mobilisation de la pièce fémorale. Le taux cumulatif de survie à 6 ans était de 84,1% descendant à 55,1% après 11 ans. Les complications et les différents aspects de l'évolution sont discutés. Au total, nos résultats ne sont pas satisfaisants et nous ne pouvons pas recommander ce type de prothèse non cimentée pour l'arthroplastie totale de la hanche de routine.

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Bettin, D., Greitemann, B., Polster, J. et al. Long term results of uncemented Judet hip endoprostheses. International Orthopaedics 19, 144–150 (1995). https://doi.org/10.1007/BF00181859

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