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TECHNICAL PAPERS: Bone/Orthopedic

Drilling in Bone: Modeling Heat Generation and Temperature Distribution

[+] Author and Article Information
Sean R. H. Davidson, David F. James

Department of Mechanical and Industrial Engineering, Institute of Biomaterials and Biomedical Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, Canada, M5S 3G8

J Biomech Eng 125(3), 305-314 (Jun 10, 2003) (10 pages) doi:10.1115/1.1535190 History: Received September 01, 2001; Revised September 01, 2002; Online June 10, 2003
Copyright © 2003 by ASME
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References

Figures

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Orthogonal cutting and material removal
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Zones of heat generation in orthogonal cutting
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Schematic drawing of a twist drill (modified from 26)
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Schematic drawing of a twist drill (modified from 26)
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Hyperbolic streamline through the primary deformation zone
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Drawing of a section of long bone, showing the drill site and the annular domain surrounding it
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Region of bone modelled in the numerical simulations (details)
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Maximum temperature reached at 0.5 mm from the drill as a function of depth in the bone, for a typical drilling simulation
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The maximum temperature, as a function of drill speed and feed rate
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The maximum temperature, for a drill speed of 100,000 rpm, as a function of feed rate
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Changes in necrosis penetration distance (Rnec) with drill speed and feed rate
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Changes in thermal injury (Rnec) with feed rate for a drill speed of 100,000 rpm
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Maximum temperature as a function of helix angle and point angle
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Effect of drill diameter on maximum temperature
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Effect of varying bone properties, in terms of percentage change, on the maximum temperature
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Effect of varying bone properties, in terms of percentage change, on the penetration of thermal necrosis
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The shear plane area was calculated my multiplying the length of segment AB by the length of the cutting edges

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