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OF THE THESIS A ROBOTIC ANKLE-FOOT ORTHOSIS WITH INTEGRATED ELECTROMYOGRAPHY BIOFEEDBACK CONTROL FOR IMPROVING GAIT SYMMETRY IN STROKE REHABILITATION by Szu-Min Chang Florida International University, 2007 Miami, Florida Professor Diana Rincon, Major Professor The pathology of stroke attacks the central nervous system commonly resulting in the loss of voluntary neuromuscular control which negatively affects the walking capability of many survivors. New rehabilitation techniques utilizing biofeedback, robotic assisted movements, and gait specific exercises have been shown individually to increase the neurological recovery as compared to traditional methods of physical rehabilitation. The Biofeedback Assisted Robotic Ankle-foot orthosis (B.A.R.A.) is a prototype that combines all three characteristic treatments into a single portable device focused on improving voluntary dorsiflexion capability and gait patterns of the ankle-foot complex. The initial pilot study utilized a single healthy individual to study the joint angle patterns of the ankle while utilizing the BARA device in a drop-foot gait simulation. The resulting angular positional curves showed general patterns representative of a normal gait cycle while eliminating the hazardous effects of drop-foot.

A robotic ankle-foot orthosis with integrated electromyography biofeedback control for improving gait symmetry in stroke rehabilitation