Active Pelvis Orthosis, also called APO, is a powered wearable robotic orthosis developed by IUVO for research into gait assistance. The device applies assistance around the pelvis and hip region while the user walks, making it a distinct body-worn system rather than a generic research program or stationary rehabilitation robot. IUVO's official medical application and research-project pages identify APO as a named prototype used to study and validate assistive control approaches. This record therefore classifies the system as a pilot or prototype in the research market, not as a confirmed commercially available medical product. Clinical effectiveness, certification, and general availability are not inferred from its research use.