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Radiopacity in bone cements using an organo-bismuth compound

Paper ID Volume ID Publish Year Pages File Format Full-Text
13342 851 2002 7 PDF Available
Title
Radiopacity in bone cements using an organo-bismuth compound
Abstract

In a joint replacement surgery it is vital for bone cement to be radiologically detectable. Consequently, heavy metal salts of barium and zirconia are incorporated as a contrast medium for this purpose. The addition of such particulate additives, however, can be detrimental to some of the physical, mechanical and biological properties. The present study reports the feasibility of using an organo-bismuth compound, namely, triphenyl bismuth (TPB) as a radiopaque agent for orthopaedic bone cements. TPB was incorporated in the bone cement matrix by two methods, (i) blending: TPB was added to the polymer phase of the bone cement and (ii) dissolution: by dissolving TPB in the monomer phase methylmethacrylate. The results showed that the inclusion of TPB at concentrations of 15% and 25% by weight of the polymer, in the bone cement matrix did not affect the polymerisation exotherm temperature and setting time. Furthermore, the addition of TPB via the dissolution method provided a statistically significant increase in the strain to failure in comparison to commercial acrylic cements containing barium sulphate, thus reducing the brittleness of the cement. The detrimental effects on the mechanical properties post conditioning in water, was also much less pronounced in the homogeneous TPB cements in comparison to barium sulphate containing cements. These observations can be attributed to the formation of a homogeneous and continuous matrix of the resultant bone cement with a much lower porosity.

Keywords
Acrylic bone cement; Radiopaque agent; Orthopaedics
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Radiopacity in bone cements using an organo-bismuth compound
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 16, August 2002, Pages 3387–3393
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us