Systemic metal Ion levels in patients with modular-neck stems : a prospective Cohort Study.

Détails

ID Serval
serval:BIB_48CA8BB32B69
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Systemic metal Ion levels in patients with modular-neck stems : a prospective Cohort Study.
Périodique
Journal of Arthroplasty
Auteur(s)
Laurençon J., Augsburger M., Faouzi M., Becce F., Hassani H., Rüdiger H.A.
ISSN
1532-8406 (Electronic)
ISSN-L
0883-5403
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
31
Numéro
8
Pages
1750-1755
Langue
anglais
Résumé
BACKGROUND: Recent registry data reveal that modular-neck hip prostheses are associated with increased revision rates compared to fixed-neck stems. Poor implant survival has been associated to corrosion at the neck-stem junction, inducing metal ion release and subsequently adverse local tissue reactions. Data on metal ion release on the neck-stem junction of such stems are scarce. The purpose of this study was to evaluate corrosion at this interface by determining metal ion release.
METHODS: Serum and whole blood metal ion levels of 40 patients after 1 year of implantation of a modular-neck stem (titanium stem and cobalt-chromium neck) were compared with 10 patients with a monobloc version of the stem (all titanium) and 10 patients having no implant at all.
RESULTS: Seven of 40 patients (18%) with a modular-neck stem had cobalt or chromium concentrations >2 μg/L. These patients underwent magnetic resonance imaging using metal artifact reduction sequences, which revealed a pseudotumor in 1 patient.
CONCLUSION: Corrosion at the neck-stem junction of modular-neck stems is a reported phenomenon, which is in part reflected by elevated systemic ion levels. The use of such implants should be restricted to a minimum, and screening algorithms of patients with such implants must be developed.
Pubmed
Web of science
Création de la notice
20/02/2016 17:43
Dernière modification de la notice
03/03/2018 16:53
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