title: Drilling in cortical bone: a finite element model and experimental investigations.
abstract: Bone 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.
authors.affiliation: Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Leics, UK. Electronic address: W.A.Lughmani@lboro.ac.uk.
authors.forename: Waqas A
authors.initials: WA
authors.lastname: Lughmani
authors.affiliation: Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, Leics, UK.
authors.forename: Kaddour
authors.initials: K
authors.lastname: Bouazza-Marouf
authors.affiliation: Department of Mechanical, Material and Manufacturing Engineering, The University of Nottingham, NG7 2RD, Nottingham, UK.
authors.forename: Ian
authors.initials: I
authors.lastname: Ashcroft
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002417:Cattle; D005269:Femur / Q000601:surgery*; D020342:Finite Element Analysis; D017276:Friction; D006801:Humans; D055595:Mechanical Phenomena; D019637:Orthopedic Procedures; D019415:Torque
keywords: Bone drilling; Experimental testing; Finite element; Orthopaedic surgery; Yield surface