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Publikation: Zeitschriftenartikel
Influence ofaccelerated aging on the wear behavior of cross-linked polyethylene liners
Grunddaten
Abstract
Autoren
Einrichtungen
Grunddaten
Titel
Influence ofaccelerated aging on the wear behavior of cross-linked polyethylene liners
Untertitel
a hip simulator study
Erscheinungsjahr
2022
Seiten (von – bis)
1 – 10
Band
11
Heft-Nr.
15
Jahr
2022
Publikationsform
Elektronische Ressource
Publikationsart
Zeitschriftenartikel
Sprache
Englisch
DOI
10.3390/jcm11154487
Letzte Änderung
03.03.2023 06:02:00
Bearbeitungsstatus
durch UB Rostock abschließend validiert
Dauerhafte URL
http://purl.uni-rostock.de/fodb/pub/69531
Links zu Katalogen
Abstract
Sequential cross-linked and annealed ultra-high-molecular-weight polyethylene (SX-PE) is known as a low-wear articulating partner, especially for total hip endoprostheses. Aging of polymeric materials, irrespective of if induced by shelf or in vivo life, can degrade their tribological and mechanical properties. However, changes in wear behavior of aged SX-PE liners have not been not quantified so far. An accelerated aging procedure, to simulate shelf and in vivo aging, was performed on thin SX-PE liners after five million load cycles using a simulator ("worn-aged") as well as on new SX-PE liners ("new-aged"). A subsequent hip simulator test was performed with both thin SX-PE liner sets in combination with large-diameter ceramic femoral head, representing a combination known as advantageous for treatment after revision because of dislocation. Oxidation indices were measured on the liners after each step of the procedure. SX-PE liners after accelerated aging show bedding-in phases during simulator test, which was a characteristic only known from clinical investigations. Hence, the wear rates of the "new-aged" ((1.71 ± 0.49) mg/million cycles) and of the "worn-aged" ((9.32 ± 0.09) mg/million cycles) SX-PE were increased in the first period compared to new unaged SX-PE liners. Subsequently, the wear rates decreased for "new-aged" and "worn-aged" inserts to (0.44 ± 0.48) mg/million cycles and (2.72 ± 0.05) mg/million cycles, respectively. In conclusion, the results show promising effects of accelerated aging on SX-PE liners in simulator testing and for potential long-term use in clinical applications.
Autoren
Dammer, Rebecca
Zietz, Carmen
Reinders, Jörn
Teske, Michael
Bader, Rainer
Einrichtungen
UMR/Institut für Biomedizinische Technik
UMR/Orthopädische Klinik und Poliklinik (OUK)