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In vivo determination of homogenised mechanical characteristics of human tibia: application to the study of tibial torsion in vivo

Record type: Article

Objective. The study presents a method allowing the in vivo homogenised characteristics of the tibiae of children to be assessed.
Design. Studies have been performed on two groups of children: six normal children, aged from 5 to 16 yr, and on four children, aged from 8 to 11 yr with tibial deformities. We analysed the tibial transverse sections from CT scans performed on the left tibia of each child.
Background. Most tibial torsion studies have only been based on geometrical parameters. Our study integrated mechanical and geometrical considerations.
Methods. The finite element models and integration of mechanical properties were performed from CT scans. Then homogenised mechanical characteristics (tensile stiffness, flexural stiffness and torsional stiffness) were calculated.
Results. The homogenised mechanical characteristics decrease between 20 to 80% of the tibial length. The values increased with age for both groups of children. Children with abnormalities seem to have values of tibial rigidities comparable with those of normal tibiae.
Conclusions. By considering the mechanical and geometrical properties of the tibia in our study, we showed that the bone stiffness of children is not altered with torsional deformities.

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Citation

Limbert, G., Estivalèzes, E., Hobatho, M.C., Baunin, C. and Cahuzac, J.P. (1998) In vivo determination of homogenised mechanical characteristics of human tibia: application to the study of tibial torsion in vivo Clinical Biomechanics, 13, (7), pp. 473-479. (doi:10.1016/S0268-0033(98)00004-7).

More information

Published date: October 1998
Keywords: tibia, mechanical properties, child tibial abnormalities, homogenised mechanical characteristics, finite element model

Identifiers

Local EPrints ID: 68680
URI: http://eprints.soton.ac.uk/id/eprint/68680
ISSN: 0268-0033
PURE UUID: 3b604f17-2018-4b83-a196-36e5b9d00e48

Catalogue record

Date deposited: 16 Sep 2009
Last modified: 19 Jul 2017 00:17

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Contributors

Author: G. Limbert
Author: E. Estivalèzes
Author: M.C. Hobatho
Author: C. Baunin
Author: J.P. Cahuzac

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