Biomechanical analysis of the use of negative heel shoes for the equinus gait in children with cerebral palsy
LOUISY
Type de document
RAPPORT DE STAGE
Langue
anglais
Auteur
LOUISY
Résumé / Abstract
Children with Cerebral palsy, often have an equinus gait. They either make initial contact with the ground with their forefoot or land flat footed during the strike phase, instead of the usual heel-to-toe roll strike. Therefore, children with cerebral palsy generally show an early brake in the stance phase. Some clinicians have recently investigated the link between the equinus gait and the negative peak of the ankle power during the strike phase. The experiments consisted in changing the children foot wear conditions: (a) barefoot, (b) with positive heeled shoes (i.e., standard shoes) and finally (c) with negative heeled shoes (NHS). The purpose of this study is for the biomechanics and impact mechanics laboratory (LBMC), to study the joint moments, the 3D joint power and the 3D angle between the joint moments and the angular velocity. It was proposed to compute these biomechanical parameters first using the outputs of the clinical gait analysis software based on a conventional model, as supplied in c3dfiles. Then the whole computation from row data was performed based on more advanced models (i.e., considering the subjects are children). For that, two matlab codes were specifically developed. The results changed slightly between conventional model and more advanced models. The curve of the joint moments, the 3D joint power and the 3D angle between the joint moments and the angular velocity were sent to the clinicians for further interpretation.
