Impact of individual anatomy on the benefit of cup medialisation in total hip arthroplasty.

Détails

ID Serval
serval:BIB_5361319376A8
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Impact of individual anatomy on the benefit of cup medialisation in total hip arthroplasty.
Périodique
Hip international : the journal of clinical and experimental research on hip pathology and therapy
Auteur(s)
Terrier A., Parvex V., Rüdiger H.A.
ISSN
1724-6067 (Electronic)
ISSN-L
1120-7000
Statut éditorial
Publié
Date de publication
10/11/2016
Peer-reviewed
Oui
Volume
26
Numéro
6
Pages
537-542
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish

Résumé
In total hip arthroplasty, cup medialisation with compensatory increase of femoral offset has been proposed to increase the moment arms of abductor muscles. However, this technique is associated with a loss of acetabular bone stock. Previous data indicates that the potential benefit is not constant among patients and is likely related to patient anatomy.
Therefore, to be able to select patients who would benefit most from this technique, we measured several anatomical parameters of the pelvis and femur in 15 patients; and evaluated correlations between them and the changes of moment arms associated with cup medialisation. The anatomical measurements were performed on 3-D reconstructions of preoperative CT scans. The moment arms of the gluteus medius and gluteus minimus were calculated for an abduction and flexion movement using patient-specific finite element models.
6 anatomical parameters were correlated with muscle moment arm variations after cup medialisation. This effect was not systematic for either muscles or movements. Among all parameters, femoral anteversion was the most important parameter in explaining the effect of cup medialisation.
Patients with small femoral anteversion or low-riding greater trochanter benefit more from cup medialisation in terms of moment arm increase in abduction motion.

Pubmed
Création de la notice
30/11/2016 18:14
Dernière modification de la notice
20/08/2019 14:08
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