An electrically-powered, bionic, orthosis system designed to assist a patient with a limb joint movement disability (neurogenic, muscular, or osseous in origin) regain lost motor function by transmission of the patient’s residual nerve function, via cutaneous electrodes, to the device motor assembly. The system includes an exoskeleton structure made of metal with electric motors and mechanical actuators; it is typically strapped to a limb around a joint (e.g., ankle, knee, shoulder) over clothing and may be used in a pre-programmed configuration. It is intended for multiple-patient use in a controlled clinical setting (e.g., gait lab, rehabilitation centre).