Stability of ceramic coatings on retrieved knee prostheses.
Coating
Implant
Metal allergy
Retrieval
Total knee arthroplasty
Wear
Journal
Journal of the mechanical behavior of biomedical materials
ISSN: 1878-0180
Titre abrégé: J Mech Behav Biomed Mater
Pays: Netherlands
ID NLM: 101322406
Informations de publication
Date de publication:
08 2023
08 2023
Historique:
received:
04
05
2023
revised:
23
06
2023
accepted:
25
06
2023
medline:
10
7
2023
pubmed:
7
7
2023
entrez:
6
7
2023
Statut:
ppublish
Résumé
In total knee arthroplasty, femoral components with coated or oxidized surfaces are commonly used as alternative to CoCrMo in metal sensitive patients. Data on the in vivo behaviour of different coating types is, however, rare. Aim of the study was the investigation of coating stability with respect to implant and patient specific parameters. Coating thickness and coating thickness reduction, respectively, was measured at 37 retrieved femoral components with TiNbN, TiN, ZrN or oxidized zirconium (OxZr) surface by the crater grinding method. The results were correlated to surface type, manufacturer, time in vivo of the implant, patient body weight and patient activity. Mean coating thickness reduction in the overall retrieval collection was 0.6 μm ± 0.8 μm. There was no correlation between coating thickness reduction and coating type, time in vivo, patient body weight, and patient activity. If grouped according to manufacturers, implants of one manufacturer showed an increased coating thickness reduction. 10 of 37 retrievals exhibited coating abrasion with exposure of the underlying alloy. TiNbN coatings showed the highest incidence (9/17) of coating abrasion. No coating breakthrough was observed in the ZrN or OxZr surfaces. Our results indicate that TiNbN coatings should be optimized to improve their wear resistance in the long-term.
Sections du résumé
BACKGROUND
In total knee arthroplasty, femoral components with coated or oxidized surfaces are commonly used as alternative to CoCrMo in metal sensitive patients. Data on the in vivo behaviour of different coating types is, however, rare. Aim of the study was the investigation of coating stability with respect to implant and patient specific parameters.
METHODS
Coating thickness and coating thickness reduction, respectively, was measured at 37 retrieved femoral components with TiNbN, TiN, ZrN or oxidized zirconium (OxZr) surface by the crater grinding method. The results were correlated to surface type, manufacturer, time in vivo of the implant, patient body weight and patient activity.
RESULTS
Mean coating thickness reduction in the overall retrieval collection was 0.6 μm ± 0.8 μm. There was no correlation between coating thickness reduction and coating type, time in vivo, patient body weight, and patient activity. If grouped according to manufacturers, implants of one manufacturer showed an increased coating thickness reduction. 10 of 37 retrievals exhibited coating abrasion with exposure of the underlying alloy. TiNbN coatings showed the highest incidence (9/17) of coating abrasion. No coating breakthrough was observed in the ZrN or OxZr surfaces.
CONCLUSION
Our results indicate that TiNbN coatings should be optimized to improve their wear resistance in the long-term.
Identifiants
pubmed: 37413893
pii: S1751-6161(23)00350-8
doi: 10.1016/j.jmbbm.2023.105997
pii:
doi:
Substances chimiques
titanium niobium nitride
0
Titanium
D1JT611TNE
Zirconium
C6V6S92N3C
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
105997Informations de copyright
Copyright © 2023 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.