Carbon-fibre-reinforced PEEK: An alternative material for flexion bushings of rotating hinged knee joints?
Bushings
CFR-PEEK
CoCr
Rotating hinged knee
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:
01 2020
01 2020
Historique:
received:
06
05
2019
revised:
24
07
2019
accepted:
13
09
2019
pubmed:
23
9
2019
medline:
7
4
2021
entrez:
23
9
2019
Statut:
ppublish
Résumé
For prosthetic knee joints of the hinged type, typically polyethylene (PE) flexion bushings are used between axis and femoral component to prevent metallic wear. Nevertheless, PE-wear can lead to periprosthetic osteolysis followed by aseptic loosening of the implant. Based on high creep and wear resistance carbon-fibre-reinforced polyether ether ketones (CFR-PEEKs) could provide an alternative material to ultra-high-molecular-weight polyethylene (UHMWPE) for this bearing type. Flexion bushings of four different materials were investigated (CFR-PEEK pitch fibres, CFR-PEEK PAN fibres, virgin PEEK without carbon fibres and UHMWPE) using a bushing tester. For determination of the polymeric and metallic wear, gravimetric measurements and particle analyses were performed. The polymeric wear rates of CFR-PEEK PAN (6.657 ± 0.714 mg/10 According to these results, the clinical use of CFR-PEEK in combination with CoCr could lead to higher wear rates and this should be avoided. Virgin PEEK may still be considered as an alternative to UHMWPE to use it for flexion bushings in a hinged knee joint.
Sections du résumé
BACKGROUND
For prosthetic knee joints of the hinged type, typically polyethylene (PE) flexion bushings are used between axis and femoral component to prevent metallic wear. Nevertheless, PE-wear can lead to periprosthetic osteolysis followed by aseptic loosening of the implant. Based on high creep and wear resistance carbon-fibre-reinforced polyether ether ketones (CFR-PEEKs) could provide an alternative material to ultra-high-molecular-weight polyethylene (UHMWPE) for this bearing type.
METHODS
Flexion bushings of four different materials were investigated (CFR-PEEK pitch fibres, CFR-PEEK PAN fibres, virgin PEEK without carbon fibres and UHMWPE) using a bushing tester. For determination of the polymeric and metallic wear, gravimetric measurements and particle analyses were performed.
RESULTS
The polymeric wear rates of CFR-PEEK PAN (6.657 ± 0.714 mg/10
CONCLUSION
According to these results, the clinical use of CFR-PEEK in combination with CoCr could lead to higher wear rates and this should be avoided. Virgin PEEK may still be considered as an alternative to UHMWPE to use it for flexion bushings in a hinged knee joint.
Identifiants
pubmed: 31542569
pii: S1751-6161(19)30650-2
doi: 10.1016/j.jmbbm.2019.103434
pii:
doi:
Substances chimiques
Benzophenones
0
Carbon Fiber
0
Ketones
0
Polymers
0
polyetheretherketone
31694-16-3
Polyethylene Glycols
3WJQ0SDW1A
Polyethylene
9002-88-4
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
103434Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.