Manufacturing conditioned roughness and wear of biomedical oxide ceramics for all-ceramic knee implants

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dc.identifier.uri http://dx.doi.org/10.15488/477
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/501
dc.contributor.author Turger, Anke
dc.contributor.author Kohler, Jens
dc.contributor.author Denkena, Berend
dc.contributor.author Correa, Tomas A.
dc.contributor.author Becher, Christoph
dc.contributor.author Hurschler, Christof
dc.date.accessioned 2016-08-31T09:19:34Z
dc.date.available 2016-08-31T09:19:34Z
dc.date.issued 2013
dc.identifier.citation Turger, Anke; Kohler, Jens; Denkena, Berend; Correa, Tomas A.; Becher, Christoph; Hurschler, Christof: Manufacturing conditioned roughness and wear of biomedical oxide ceramics for all-ceramic knee implants. In: Biomedical Engineering Online 12 (2013), 84: DOI: http://dx.doi.org/10.1186/1475-925X-12-84
dc.description.abstract Background: Ceramic materials are used in a growing proportion of hip joint prostheses due to their wear resistance and biocompatibility properties. However, ceramics have not been applied successfully in total knee joint endoprostheses to date. One reason for this is that with strict surface quality requirements, there are significant challenges with regard to machining. High-toughness bioceramics can only be machined by grinding and polishing processes. The aim of this study was to develop an automated process chain for the manufacturing of an all-ceramic knee implant. Methods: A five-axis machining process was developed for all-ceramic implant components. These components were used in an investigation of the influence of surface conformity on wear behavior under simplified knee joint motion. Results: The implant components showed considerably reduced wear compared to conventional material combinations. Contact area resulting from a variety of component surface shapes, with a variety of levels of surface conformity, greatly influenced wear rate. Conclusions: It is possible to realize an all-ceramic knee endoprosthesis device, with a precise and affordable manufacturing process. The shape accuracy of the component surfaces, as specified by the design and achieved during the manufacturing process, has a substantial influence on the wear behavior of the prosthesis. This result, if corroborated by results with a greater sample size, is likely to influence the design parameters of such devices. eng
dc.description.sponsorship DFG/CRC/599
dc.language.iso eng
dc.publisher London : Biomed Central Ltd.
dc.relation.ispartofseries Biomedical Engineering Online 12 (2013)
dc.rights CC BY 2.0
dc.rights.uri https://creativecommons.org/licenses/by/2.0/
dc.subject bioceramic eng
dc.subject implant eng
dc.subject knee endoprostheses eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Manufacturing conditioned roughness and wear of biomedical oxide ceramics for all-ceramic knee implants
dc.type article
dc.type Text
dc.relation.issn 1475-925X
dc.relation.doi http://dx.doi.org/10.1186/1475-925X-12-84
dc.bibliographicCitation.volume 12
dc.bibliographicCitation.firstPage 84
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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