Title: 3D modeling, FEM analysis and manufacturing of external fixators for human-bone fractures

Authors: L. Videla, M. Cerrolaza, C. Gonzalez

Addresses: Bioengineering Center, Faculty of Engineering, Central University of Venezuela, P.O. Box. 50.361, Caracas 1050-A, Venezuela. Bioengineering Center, Faculty of Engineering, Central University of Venezuela, P.O. Box. 50.361, Caracas 1050-A, Venezuela. Bioengineering Center and Service of Traumatology and Orthopaedics, Universitary Hospital, Caracas, Venezuela

Abstract: Some new prototypes of external fixation devices for open-bone human fractures are described in this work. The analysis and design of the prototypes were based on a 3D modelling and a finite-element analysis, in order to determine the stress distributions in the devices to obtain improved, resistant and light designs. The geometries of the new devices are designed and modelled using the Pro/engineer commercial software. The fixators were manufactured by using different materials such as quirurgical steel, aluminium alloys and reinforced plastics, in order to obtain light apparatus. The prototypes were used in real-life situations, i.e. in human patients at the Universitary Hospital. The clinical history evolution of the patients showed a satisfactory performance of the devices.

Keywords: bioengineering; external fixators; FEM analysis; 3D modelling.

DOI: 10.1504/IJCAT.2002.000286

International Journal of Computer Applications in Technology, 2002 Vol.15 No.1/2/3, pp.109-121

Available online: 15 Jul 2003 *

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