Title: Ex vivo experimental and numerical study of stresses distribution in human cadaveric tibiae

Authors: Maria G. Fernandes; Elza M.M. Fonseca; Renato N. Jorge; Maria C. Manzanares-Céspedes

Addresses: INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-464, Porto, Portugal ' LAETA, INEGI, School of Engineering, Mechanical Engineering Department, Polytechnic of Porto (ISEP), Portugal ' INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal ' Dpt. P i T Exp., Unitat d'Anatomia i Embriologia Humana, Universitat de Barcelona, Lab 5307, Despatx 5305, Campus Bellvitge, Feixa Llarga SN, L'Hospitalet, 08907, Spain

Abstract: The mechanical behaviour of human bone tissue subject to drilling has been recently reviewed due to its increased clinical interest. However, no published data exist regarding stress analysis during the drilling. In this study, an elasto-plastic dynamic FE model of bone drilling was developed using the human cadaveric tibia obtained with a handheld 3D scanner. The FE model was validated with experimental tests and different drilling conditions were simulated in order to study the stresses distribution during the drilling process. The developed FE model was in good agreement when compared with experimental tests. Results suggest that the use of lower drill speed and higher feed-rate lead to a decrease in the stress level of the treated tibial bone. The developed FE model can be used for future studies and cover not only the mechanical behaviour of human tibiae but also the thermal aspects.

Keywords: human tibia; drilling; stresses; numerical model; experimental model; feed-rate; drill speed.

DOI: 10.1504/IJMEI.2021.113396

International Journal of Medical Engineering and Informatics, 2021 Vol.13 No.2, pp.164 - 173

Received: 22 Jan 2019
Accepted: 29 Mar 2019
Published online: 03 Mar 2021 *

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