3D finite-element modelling of drilling cortical bone: Temperature analysis

Khurshid Alam*, Mushtaq Khan, Vadim V. Silberschmidt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Bone drilling is a key part of major orthopaedic surgeries for fixing fractured bones and replacing damaged joints. One of the main problems in bone drilling is thermal necrosis of tissue, which can occur due to elevated temperatures in the drilling zone. Investigation of the temperatures arising in bone drilling is necessary to analyse the extent of bone necrosis. This paper presents a three-dimensional thermo-mechanical finite-element model of a bone-drilling process to study the effect of drilling parameters (cutting speed and feed rate) and cooling conditions (air and saline solution) on the temperature in drilled bone. The drilling speed was found to have a higher effect compared to that of the feed rate in inducing thermal necrosis in bone for the tested cooling environments. The level of necrosis penetration into bone was strongly affected by the drilling speed and the application of saline cooling (irrigation) in the drilling zone. A considerable extent of necrosis was predicted even at lower drilling speeds when no cooling was used. Drilling experiments were performed on real cortical bone to measure temperatures near the immediate vicinity of the drill. Calculated temperatures were compared with experimental values and were found to be in good agreement with them.

Original languageEnglish
Pages (from-to)618-623
Number of pages6
JournalJournal of Medical and Biological Engineering
Volume34
Issue number6
DOIs
Publication statusPublished - 2014

Keywords

  • Bone drilling
  • Finite element analysis
  • Orthopaedics
  • Thermal necrosis

ASJC Scopus subject areas

  • Biomedical Engineering
  • Medicine(all)

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