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Imageless navigation of hip resurfacing arthroplasty increases the implant accuracy

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Abstract

Surface arthroplasty of the hip is increasingly popular. Optimising the position of the femoral component is essential to avoid early implant failures such as femoral neck fractures. Sixty hip surface replacements were retrospectively analysed. In 30 patients imageless navigation was used, and 30 patients were operated upon using conventional jigs. Accuracy, implant position, operating time, and complications have been recorded. The navigation device improved the implant position with high accuracy. Implant-shaft angles <130° and uncovered cancellous bone of the superior femoral neck could be safely avoided. After a significant learning curve, navigation took 15 minutes longer than conventional implantation. No complications were found in either group. Computer-assisted navigation allowed accurate implantation of the femoral component avoiding pitfalls of hip surface replacement. From our point of view the optimal placement of the femoral component outweighs the disadvantage of a longer operating time.

Résumé

Le resurfaçage de la hanche devient de plus en plus populaire. L’optimisation de la position du composant fémoral est importante afin d’éviter les échecs tels que les fractures du col. Matériel et méthode : 60 resurfaçages de hanche ont été analysés de façon rétrospective chez 30 patients en utilisant la même technique avec navigation, sans image et en comparant cette série à une série de 30 patients opérés de façon conventionnelle. La sécurité, la position de l’implant, le temps opératoire et les complications ont été rapportés. Résultats : le système de navigation améliore la position de l’implant de façon significative. Après la courbe d’apprentissage le temps de la navigation augmente de 15 minutes le temps opératoire. Aucune complication n’a été relevée dans les deux groupes. Conclusions : La technique chirurgicale assistée par la navigation permet une meilleure implantation du composant fémoral et évite les erreurs en cas de resurfaçage de hanche. Pour nous, l’amélioration de la position du composant fémoral contrebalance de façon avantageuse l’augmentation du temps opératoire.

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Schnurr, C., Michael, J.W.P., Eysel, P. et al. Imageless navigation of hip resurfacing arthroplasty increases the implant accuracy. International Orthopaedics (SICOT) 33, 365–372 (2009). https://doi.org/10.1007/s00264-007-0494-7

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  • DOI: https://doi.org/10.1007/s00264-007-0494-7

Keywords

Navigation