Sensory feed-back in hybrid orthotic system

Motor restoration of paralyzed humans using a hybrid orthotic system (HOS) known as artificial reflex control is discussed. Artificial reflex control is a nonnumerical procedure requiring sensory information. The sensory information for a hybrid brace combining functional electrical stimulation and an externally controlled modular brace consists of ground force record, angular displacement from the gravity line, joint angles and electromyogram (EMG) signals. Sensors for the HOS are described. The use of an EMG monitor is believed to increase the efficacy of the HOS by reducing muscle fatigue, increasing safety, and reducing the use of external power. External power is used only in that phase of the gait in which muscular function is not adequate.<
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