Development and test of a new plantar pressure control device for foot unloading
Élaboration et validation d’un nouveau dispositif de surveillance des pressions plantaires : application à la décharge du pied
Résumé
Objective. – To validate a new plantar pressure control device able to detect excessive plantar pressure on-line and to improve the subject’s awareness of the gait pattern in order to correct and optimize the load distribution patterns. The aim of this study was to verify the feasibility of a deliberate and partial unload of the first metatarsal head.Material and method. – Eight healthy subjects were equipped with the plantar pressure sensors integrated in customized insoles. They were told to unload the first metatarsal head of the right foot by 5%. During the trials, the auditory and visual signals inform the subject of an excessive, insufficient or correct unload.Results. – Five subjects over eight succeeding in modifying significantly their gait pattern and in unloading by 5% the first metatarsal head. The unload is effective in 70.7% of the trials. However, the subjects were spontaneously inclined to reduce peak pressure under the first metatarsal head beyond the critical peak plantar pressure threshold (48.2% of the trials).
Valider un nouvel appareil de surveillance des pressions plantaires capable de détecter, en temps réel, des hyperpressions et permettre à l'utilisateur un autocontrôle des évènements dynamiques à l'interface pied-chaussure-sol. Le but de cette étude est de vérifier la faisabilité d'une décharge intentionnelle et partielle de la première tête métatarsienne.
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