A battery-powered, pre-programmed, lower-limb orthosis system designed to assist a patient with a walking disability (neurogenic, muscular, or osseous in origin) regain lost motor function by manipulating the legs through a normal walking pattern during ambulation. The system includes an exoskeleton structure made of metal with electric motors, mechanical actuators, and sensors for feedback; it is typically strapped to the legs over clothing. It is intended for multiple-patient use, in a controlled clinical setting (e.g., gait lab, rehabilitation centre) under healthcare professional supervision.