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Lookup NU author(s): Professor Andrew McCaskie
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Modern cementing techniques aim to improve microinterlock and to reduce aseptic loosening. The Norwegian and Swedish Arthroplasty Registers have shown an increased risk of revision using reduced-viscosity cement. We have compared 2 modern cementing techniques using retrograde insertion of normal- viscosity and reduced-viscosity cements. Laboratory-simulated arthroplasty was performed in paired human femora. Performance was evaluated by measuring pressures generated during cementation, cement penetration, and shear strength of the prosthesis-cement and bone-cement interfaces. Large differences exist between these 2 modern techniques. Despite no statistical differences between the pressure measurements with the 2 techniques, greater penetration of reduced-viscosity cement was found proximally, with a trend toward increased penetration of the more viscous cement distally. Areas of greater cement penetration with reduced-viscosity cement proximally produced higher values of ultimate shear strength. Both techniques showed a progressive increase in the shear strength as the level of the section progressed toward the tip of the prosthesis. There is a trend with both techniques for the distal fixation to be stronger.
Author(s): McCaskie AW; Reading AD; Barnes MR; Gregg PJ
Publication type: Article
Publication status: Published
Journal: Journal of Arthroplasty
Year: 2000
Volume: 15
Issue: 4
Pages: 479-487
ISSN (print): 0883-5403
ISSN (electronic): 1532-8406
Publisher: Churchill Livingstone
URL: http://dx.doi.org/10.1054/arth.2000.5266
DOI: 10.1054/arth.2000.5266
PubMed id: 10884209
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