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Kinematics of the Foot

Published online by Cambridge University Press:  18 September 2015

P. Allard ,
P.S. Thiry ,
M. Duhaime  and
G. Geoffroy
P. Allard
Affiliation:
Pediatric Research Center, Sainte-Justine Hospital and the Department of Mechanical Engineering, Ecole Polytechnique de Montréal
P.S. Thiry
Affiliation:
Pediatric Research Center, Sainte-Justine Hospital and the Department of Mechanical Engineering, Ecole Polytechnique de Montréal
M. Duhaime
Affiliation:
Pediatric Research Center, Sainte-Justine Hospital and the Department of Mechanical Engineering, Ecole Polytechnique de Montréal
G. Geoffroy
Affiliation:
Pediatric Research Center, Sainte-Justine Hospital and the Department of Mechanical Engineering, Ecole Polytechnique de Montréal
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Orthogonal stereoradiographs are frequently utilized in determining three-dimensional geometrical parameters of human body segments. They have been applied here in the estimation of the length and elongation of the ligaments of the normal foot. Three small spherical metallic markers were respectively encrusted into the tibia and fibula, the seven bones of the tarsus and into the five metatarsals of an amputed lower limb to identify uniquely their spatial location. The foot was then positioned on a rotating platform. Standardized antero-posterior and lateral radiographs were taken. Afterwards the foot was dissected and the proximal and distal insertions of most of its ligaments were located by means of spherical markers. A second series of orthogonal radiographs were taken of each of the fourteen bones. The radiographs were digitized. The length of each ligament and elongation for a simple and complex movements were calculated by means of a computer program. The results of a simple movement of rotation representing a normal 20° dorsiflexion at the talocrural joint and of complex movements of rotation simulating an abnormal high arch such as encountered in Friedreich’s ataxia are presented and discussed.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 9 , Issue 2 , May 1982 , pp. 119 - 125
Copyright
Copyright © Canadian Neurological Sciences Federation 1982

References

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