Abstract
The purpose of this study was to perform an objective clinical and radiological assessment of the thrust plate prosthesis (TPP). Fifty-three prostheses were evaluated clinically using the Harris hip score (HHS), visual analog scale (VAS), and radiographically before surgery, at the time of discharge, and postoperatively after on average of 8.09 (range 4.61–9.93) years. The average HHS significantly (p ≤ 0.05) improved from 48 (range 18–77) points to 95 (range 46–100) points. The VAS revealed significant (p ≤ 0.05) reduction of pain at rest and under load. Radiographic analysis showed a considerable potential for osteolysis under the thrust plate. Sixteen prostheses revealed signs of radiolucent zones. In general, there was a good clinical outcome with no major limitations in function. Radiographic changes under the thrust plate indicate an adaptation processes resulting from changed biomechanics. This study suggests that the TPP could be a good alternative in total hip replacement in younger patients.
Résumé
Le propos de cette étude est d’évaluer cliniquement et radiologiquement une prothèse plaque (TPP). 53 prothèses plaques ont été évaluées cliniquement grâce au score de Harris et à l’échelle visuelle analogique et radiographiquement avant l’intervention, après la sortie de l’établissement, en post-opératoire avec une moyenne de 8,09 ans (de 4,61 à 9,93 ans). le score de Harris a augmenté de façon significative (p = 0.05) passant de 48 (18–77) à 95 (46–100) points. L’évaluation de la douleur par échelle visuelle analogique (p = 005) a montré une réduction de celle-ci. L’analyse radiographique a montré par contre un potentiel important de liserés sous la prothèse. 16 prothèses montrent des signes radiologiques d’appréciation difficile. ces prothèses démontrent qu’une bonne évolution clinique est possible avec peu de limitations fonctionnelles. La radiographie montre par contre des processus d’adaptation et de modifications osseuses secondaires aux sollicitations biomécaniques. Cette étude permet de penser que la prothèse TPP est une bonne alternative au remplacement de la hanche chez les sujets les plus jeunes.
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Steens, W., v.d. Daele, R., Simon, U. et al. Clinical and radiological mid-term results of the thrust plate prosthesis. International Orthopaedics (SICOT) 33, 1519–1524 (2009). https://doi.org/10.1007/s00264-008-0714-9
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DOI: https://doi.org/10.1007/s00264-008-0714-9