Computer Modelling of the Gait Cycle Patterns for a Drop Foot Patient for the Composite a Polypropylene Ankle-Foot Orthoses

Ankle-foot orthoses (AFO) is a device that supports the ankle and foot part of the body when there is a muscle weakness or a nerve damage, Ankle-foot orthoses are prescribed to individuals with minimal spinal cord injury and excellent trunk muscle control (AFOs). In this work design and manufacturing of Ankle Foot Orthosis (AFO) was achieved experimentally to obtain the gait cycle shape using the suggested types of composite layering. The experimental program includes the manufacture two type of AFO: Carbon, Perlon, Kevlar, Kenaf fibers. Two Sequences are used in this works based on the results of the examinations of the samples. The sequence 1 is the order of the layers in it (2Perlon + 1Carbon fiber + 2Perlon + 1Kevlar + 2Perlon) and the Sequence 2 is (2Perlon + 3Carbon fiber + 2Perlon + 3Kevlar + 2Perlon). The patient’s gait cycle data (including pressure distribution using an F-socket and Ground Reaction Force [GRF] using a force plate) were presented here. The patient’s height (176 cm), weight (78 kg), and approximate age of 39. The case study was a patient suffered from drop foot. The patient’s gait cycle data (including pressure distribution using F-socket and using a force plate, ground reaction force) have been collected. All the readings of the gait cycle became different when the patient was without wearing AFO because of the foot drop due to severe damage to the nerves, so there was a difference in the readings of the right and left foot, while the difference decreased in the case of the patient wearing AFO because the AFO helped the patient to walk, and therefore the readings converged with the readings of the normal person. Finally, the findings of patient balance and gait cycle show that composite materials AFO superior than PP.