Abstract
The aim of this study was to compare the component positioning of Birmingham Hip Resurfacings implanted through a posterolateral approach with those inserted via a direct lateral approach. Sixty-four hip resurfacings for osteoarthritis were carried out by a single surgeon: 23 through a direct lateral approach and 41 through a posterolateral approach. No significant differences in implant survival, Oxford Hip Scores or complications were found. The mean abduction angle for the acetabular component was lower (p < 0.007) with a posterior approach (mean: 37.5°; range 26–50°) than the lateral approach (mean: 43°; range 30–56°). There was no significant difference in stem orientation, either in flexion/extension or varus/valgus, between the two groups. This study demonstrates that components can be implanted in an acceptable orientation through either approach but that the posterior approach results in greater closure of the acetabular component.
Résumé
Le but de cette étude est de comparer la position de l’implant de resurfaçage de la hanche de type Birmingham, mis en place après abord postéro externe comparé à la voie directe latérale. 64 resurfaçages de hanche pour coxarthrose ont été réalisés par un seul chirurgien, 23 par voies latérales et 41 par voies postéro latérales. Il n’y a pas de différence significative dans la survie de l’implant, ni dans le score d’Oxford et les complications. La position du composant acétabulaire est beaucoup plus basse (p < 0.007) par abord postérieur (angle moyen 37.5° entre 26 à 50) que par voie latérale (angle moyen 43° entre 30 à 56). Il n’y a pas de différence significative dans l’orientation de la pièce fémorale ni en flexion, ni en extension et ni en varus ni en valgus. Cette étude démontre que les composants peuvent être implantés de façon acceptable par une des deux abords mais, l’abord postérieur entraîne une position plus basse de l’implant acétabulaire.
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No benefits in any form have been received from a commercial party directly or indirectly related to the subject of this article.
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Myers, G.J.C., Morgan, D., McBryde, C.W. et al. Does surgical approach influence component positioning with Birmingham Hip Resurfacing?. International Orthopaedics (SICO 33, 59–63 (2009). https://doi.org/10.1007/s00264-007-0469-8
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DOI: https://doi.org/10.1007/s00264-007-0469-8