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

In vivo determination of homogenised mechanical characteristics of human tibia: application to the study of tibial torsion in vivo
In vivo determination of homogenised mechanical characteristics of human tibia: application to the study of tibial torsion in vivo
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.
tibia, mechanical properties, child tibial abnormalities, homogenised mechanical characteristics, finite element model
0268-0033
473-479
Limbert, G.
a1b88cb4-c5d9-4c6e-b6c9-7f4c4aa1c2ec
Estivalèzes, E.
d3dbe8ac-5992-4602-9170-5960d1706d02
Hobatho, M.C.
fc3b7df4-9664-418a-975f-0aea680a9c0c
Baunin, C.
3fbb616e-7154-4063-9648-0673de2480ed
Cahuzac, J.P.
bbbbdf1d-0183-4645-b2bf-d3d37c535b04
Limbert, G.
a1b88cb4-c5d9-4c6e-b6c9-7f4c4aa1c2ec
Estivalèzes, E.
d3dbe8ac-5992-4602-9170-5960d1706d02
Hobatho, M.C.
fc3b7df4-9664-418a-975f-0aea680a9c0c
Baunin, C.
3fbb616e-7154-4063-9648-0673de2480ed
Cahuzac, J.P.
bbbbdf1d-0183-4645-b2bf-d3d37c535b04

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), 473-479. (doi:10.1016/S0268-0033(98)00004-7).

Record type: Article

Abstract

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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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

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Date deposited: 16 Sep 2009
Last modified: 13 Mar 2024 19:01

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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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