Drilling in cortical bone-FE & Experimental investigations.pdf (1.52 MB)
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journal contribution
posted on 2014-12-23, 09:47 authored by Waqas Lughmani, Kaddour Bouazza-Marouf, Ian A. AshcroftBone drilling is an essential part of many orthopaedic surgery procedures, including
those for internal fixation and for attaching prosthetics. Estimation and control of
bone drilling forces are critical to prevent drill-bit breakthrough, excessive heat
generation, and mechanical damage to the bone. An experimental and
computational study of drilling in cortical bone has been conducted. A 3D finite
element (FE) model for prediction of thrust forces experienced during bone drilling
has been developed. The model incorporates the dynamic characteristics involved in
the process along with geometrical considerations. An elastic-plastic material model
is used to predict the behaviour of cortical bone during drilling. The average critical
thrust forces and torques obtained using FE analysis are found to be in good
agreement with the experimental results.
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