Foot modeling and smart plantar pressure reconstruction from three sensors.
In order to monitor pressure under feet, this study presents a biomechanical model of the human foot. The main elements of the foot that induce the plantar pressure distribution are described. Then the link between the forces applied at the ankle and the distribution of the plantar pressure is established. Assumptions are made by defining the concepts of a 3D internal foot shape, which can be extracted from the plantar pressure measurements, and a uniform elastic medium, which describes the soft tissues behaviour. In a second part, we show that just 3 discrete pressure sensors per foot are enough to generate real time plantar pressure cartographies in the standing position or during walking. Finally, the generated cartographies are compared with pressure cartographies issued from the F-SCAN system. The results show 0.01 daN (2% of full scale) average error, in the standing position.
CNRS-Foton, UMR 6082, Lannion, France.
Hussein Abou
HA
Ghaida
CNRS-Foton, UMR 6082, Lannion, France.
Serge
S
Mottet
CNRS-Foton, UMR 6082, Lannion, France.
Jean-Marc
JM
Goujon
3D foot shape; biomechanics; foot modeling; instrumented insole.; numerical simulation; plantar pressure cartography; pressure sensors