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Some failure modes of four clinical bone cements

Liu, C. and Green, S. M. and Watkins, N. D. and Gregg, P. J. and McCaskie, A. W. (2001) Some failure modes of four clinical bone cements. Proceedings Of The Institution Of Mechanical Engineers. Part H, Journal Of Engineering In Medicine, 215 (4). pp. 359-366. ISSN 0954-4119

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Abstract

The fracture or failure behaviours of four commercial acrylic-based bone cements have been examined in tensile, bending and compression modes, and their mechanical properties are reviewed. It was found that Palacos R-40 bone cement had high radiopaque agent concentration, with high surface hardness. It exhibited a much lower bending strength and bending modulus compared with the other three bone cements (CMW1, CMW2000 and Simplex P). The textures of tensile fracture surfaces produced were similar for the four bone cements studied. The fracture surface was fragmented by crevices, which developed through the matrix and around large undissolved polymethylmethacrylate (PMMA) beads. Three bands with different features existed on the bending fracture surfaces, with an abrupt transition between them. It appears that the agglomerates of zirconium dioxide particles are implicated in Palacos R-40 bone cement fracture surface. The examination of compressive failed specimens revealed that a 'yielded crack band' existed across the transverse section. Plastic deformation resulted in the PMMA beads being squashed in the longitudinal direction and dilated in the transverse direction.

Item Type: Article
Journal or Publication Title: Proceedings Of The Institution Of Mechanical Engineers. Part H, Journal Of Engineering In Medicine
Uncontrolled Keywords: bone cement ; failure behaviour ; mechanical properties ; PMMA
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 57900
Deposited By: ep_importer_pure
Deposited On: 16 Oct 2012 16:41
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57900

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