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https://doi.org/10.15480/882.1424
Title: | Fretting-Korrosion modularer Hüftendoprothesen | Language: | German | Authors: | Bünte, Dennis | Keywords: | Konusverbindung; Verschleißanalyse; Versagensmechanismus; Reibkorrosion | Issue Date: | 2017 | Examination Date: | 11-Aug-2017 | Abstract (german): | Fretting-Korrosion in modularen Hüftendoprothesen generiert Verschleißprodukte, die ein frühzeitiges Versagen der Prothesen auslösen können. Ziel der Arbeit war die Identifikation von Designmerkmalen, die zur Verschleißanfälligkeit von Konusverbindungen führen. Die Arbeit basiert auf Analysen von Explanteten runder und flacher Konusdesigns einer metallischen Werkstoff-Paarung (CoCr-TMZF). Anhand individueller Konusgeometrien werden Verklemmeigenschaften bestimmt, aus denen die Kontaktsituation der Konusverbindung in-vivo abgeschätzt wird. Anhand dieser mechanischen Perspektive konnte die Anordnung lokaler Verschleißphänomene an der Konusoberfläche erklärt werden. |
Abstract (english): | Early failure of total hip replacements can be caused by the release of wear products from modular junctions due to fretting-corrosion. The aim was to identify design factors that make the analyzed tapers susceptible to wear and corrosion. A quantitative analysis of wear from circular and flat taper designs for a mixed metal coupling (CoCr-TMZF) was performed. Based on the reconstruction of explanted taper geometries, individual engagement properties are determined, providing an estimate of the contact situation at the taper interface in-vivo. This mechanical approach gave explanations of the arrangement of local wear phenomena at the taper interface. |
URI: | http://tubdok.tub.tuhh.de/handle/11420/1427 | DOI: | 10.15480/882.1424 | Institute: | Biomechanik M-3 | Document Type: | Thesis | Thesis Type: | Doctoral Thesis | Advisor: | Morlock, Michael | Referee: | Hoffmann, Norbert ![]() |
Project: | Silicon Nitride Coatings for Improved Implant Function | License: | ![]() |
Appears in Collections: | Publications with fulltext |
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Buente_Fretting-Korrosion_10_15480_882_1424.pdf | 88,23 MB | Adobe PDF | View/Open![]() |
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