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Calculating the axes of rotation for the subtalar and talocrural joints using 3D bone reconstructions

Parr, WCH; Chatterjee, HJ; Soligo, C; (2012) Calculating the axes of rotation for the subtalar and talocrural joints using 3D bone reconstructions. Journal of Biomechanics , 45 (6) 1103 - 1107. 10.1016/j.jbiomech.2012.01.011. Green open access

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Abstract

Orientation of the subtalar joint axis dictates inversion and eversion movements of the foot and has been the focus of evolutionary and clinical studies for a number of years. Previous studies have measured the subtalar joint axis against the axis of the whole foot, the talocrural joint axis and, recently, the principal axes of the talus. The present study introduces a new method for estimating average joint axes from 3D reconstructions of bones and applies the method to the talus to calculate the subtalar and talocrural joint axes. The study also assesses the validity of the principal axes as a reference coordinate system against which to measure the subtalar joint axis. In order to define the angle of the subtalar joint axis relative to that of another axis in the talus, we suggest measuring the subtalar joint axis against the talocrural joint axis. We present corresponding 3D vector angles calculated from a modern human skeletal sample. This method is applicable to virtual 3D models acquired through surface-scanning of disarticulated ‘dry’ osteological samples, as well as to 3D models created from CT or MRI scans.

Type: Article
Title: Calculating the axes of rotation for the subtalar and talocrural joints using 3D bone reconstructions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jbiomech.2012.01.011
Publisher version: http://dx.doi.org/10.1016/j.jbiomech.2012.01.011
Language: English
Additional information: This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. PubMed ID: 22284429
Keywords: Ankle joint axis, Subtalar joint axis, 3D modelling, Principal axes
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Anthropology
URI: https://discovery.ucl.ac.uk/id/eprint/1360417
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