Finite Element Thermal Analysis of Bone Cement for Joint Replacements

[+] Author and Article Information
Chaodi Li, Shiva Kotha, Chen-Hsi Huang, James Mason

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556

Don Yakimicki, Michael Hawkins

Department of Polymer Research, Zimmer, Inc., Warsaw, IN 46580

J Biomech Eng 125(3), 315-322 (Jun 10, 2003) (8 pages) doi:10.1115/1.1571853 History: Revised November 16, 2002; Online June 10, 2003
Copyright © 2003 by ASME
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Schematic of Thermal Test Setup. Experiments were performed in temperature-controlled chamber, and T is the ambient temperature.
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A typical cement temperature T(°C) versus time t (min) profile during bone cement curing
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Sketch of the bone-cement-prosthesis system model. The cement mantle thicknesses were specified as 3, 5, and 7 mm corresponding to femoral prosthesis radii of 10, 8, and 6 mm in a typical 26-mm-diam femoral cavity. The bone thickness was assumed to be 8 mm.
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Effects of bone cement conduction coefficient kc on the numerical temperature predictions. Dash curves represent the temperatures at the center of the cement mantle measured with the thermocouples; solid curves represent the numerical predictions of the same locations with different kc values (a: kc=0.10; b: kc=0.17; c: kc=0.24).
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Comparison of the temperature history (temperature (°C) versus time (seconds)) in the location of the mold center between the numerical fit (-○-) and experimental data (-) in the bone cement characterization tests with different ambient temperatures
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(a) Temperature profiles across the system for the simulation of 3 mm thick bone cement with 10 mm radii metal prosthesis system. (b) Degree of reaction α development in the cement for the simulation of 3 mm thick bone cement with 10 mm radii metal prosthesis system.
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Temperature (°C) versus time (s) at the bone/cement interface for three cement thicknesses (3, 5, and 7 mm)
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The temperature T(°C) and damage factor Ω history at the bone/cement interface at 5 mm thick cement mantle case
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Bone thermal damage factor Ω versus r (mm) in the bone-cement-prosthesis system (bone/cement interface at r=13 mm; bone external boundary at r=21 mm)




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