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Some failure modes of four clinical bone cements

Lookup NU author(s): Dr Chaozong Liu, Professor Paul Gregg, Professor Andrew McCaskie


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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.

Publication metadata

Author(s): Gregg PJ; McCaskie AW; Liu C; Green SM; Watkins ND

Publication type: Article

Publication status: Published

Journal: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

Year: 2001

Volume: 215

Issue: 4

Pages: 359-366

Print publication date: 01/01/2001

ISSN (print): 0954-4119

ISSN (electronic): 2041-3033

Publisher: Sage Publications


DOI: 10.1243/0954411011535948

PubMed id: 11521759


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