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Verfasst von:Braun, Steffen [VerfasserIn]   i
 Uhler, Maximilian [VerfasserIn]   i
 Bormann, Therese [VerfasserIn]   i
 Schröder, Stefan [VerfasserIn]   i
 Jäger, Sebastian [VerfasserIn]   i
 Sonntag, Robert [VerfasserIn]   i
 Kretzer, Jan Philippe [VerfasserIn]   i
Titel:Backside wear in total knee replacement
Titelzusatz:a new quantitative measurement method and a comparison of polished cobalt-chromium tibial trays with titanium tibial trays
Verf.angabe:Steffen Braun, Maximilian Uhler, Therese Bormann, Stefan Schroeder, Sebastian Jaeger, Robert Sonntag, Jan Philippe Kretzer
Jahr:2021
Jahr des Originals:2020
Umfang:11 S.
Fussnoten:Available online 1 December 2020 ; Gesehen am 03.03.2021
Titel Quelle:Enthalten in: Wear
Ort Quelle:Amsterdam [u.a.] : Elsevier Science, 1957
Jahr Quelle:2021
Band/Heft Quelle:466/467(2021), Artikel-ID 203552
ISSN Quelle:0043-1648
Abstract:Introduction - In modular total knee replacements, polyethylene backside wear can occur due to micro-motion between the tibial tray and polyethylene insert. Tibial trays manufactured from a cobalt-chromium alloy with highly polished surfaces are increasingly used to prevent backside wear. However, there is no quantitative evidence for this supposed wear advantage because previous evaluations only considered the subjective assessment of surface damage and changes without any information about the characteristics of the generated wear products. The validity about a true wear in the form of material removal is often missing. Therefore, this study used a new method to quantitatively investigate the possible wear advantage of polished cobalt-chromium tibial trays. - Materials and methods - Total knee replacements with titanium and polished cobalt-chromium tibial trays (SIGMA® DePuy Synthes & Johnson&Johnson, USA) were tested in a physiological knee wear simulator according to ISO-14243-1 for 3 x 106 cycles. The articulation side was hermetically separated from the backside of the insert. The serum was analyzed separately by particle analysis according to ASTM-F1877. - Results - With polished cobalt-chromium tibial trays, significantly (p = 0.003) less backside wear particles was generated. The backside wear particles differ significantly in size and morphology from the articulating particles. - Conclusion - In this study, backside wear was measured quantitatively and its wear particles were characterized for the first time. We demonstrated that even with modern inlay locking mechanisms and polished surfaces, wear particles on the backside can account for 15-33% of total wear. With polished cobalt-chromium trays, significantly less backside wear particles was generated.
DOI:doi:10.1016/j.wear.2020.203552
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1016/j.wear.2020.203552
 Volltext: https://www.sciencedirect.com/science/article/pii/S0043164820310115
 DOI: https://doi.org/10.1016/j.wear.2020.203552
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Backside wear
 Cobalt-chromium-alloy
 Particle analysis
 Polished tibial tray
 Total knee replacement
K10plus-PPN:1750138972
Verknüpfungen:→ Zeitschrift

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