Numerical Predictions of the Thermal Behaviour and Resultant Effects of Grouting Cements While Setting Prosthetic Components in Bone

GL Quarini, ID Learmonth, S Gheduzzi

Research output: Contribution to journalArticle (Academic Journal)

4 Citations (Scopus)

Abstract

Acrylic cements are commonly used to attach prosthetic components in joint replacement surgery. The cements set in short periods of time by a complex polymerization of initially liquid monomer compounds into solid structures with accompanying significant heat release. Two main problems arise from this form of fixation: the first is the potential damage caused by the temperature excursion, and the second is incomplete reaction leaving active monomer compounds, which can potentially be slowly released into the patient. This paper presents a numerical model predicting the temperature-time history in an idealized prosthetic-cement-bone system. Using polymerization kinetics equations from the literature, the degree of polymerization is predicted, which is found to be very dependent on the thermal history of the setting process. Using medical literature, predictions for the degree of thermal bone necrosis are also made. The model is used to identify the critical parameters controlling thermal and unreacted monomer distributions.
Translated title of the contributionNumerical Predictions of the Thermal Behaviour and Resultant Effects of Grouting Cements While Setting Prosthetic Components in Bone
Original languageEnglish
Pages (from-to)625 - 634
Number of pages10
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume220 (5)
DOIs
Publication statusPublished - Sep 2006

Bibliographical note

Publisher: Professional Engineering Publishing

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