OHBU, Japan -- The elderly patients suffer from severe dementia, but their faces light up when they see the dog-shaped robot, swaddled in soft clothing, waddle around the hospital floor. Some clap; ...

Slowly but steadily an 83-year-old woman marched up and down the corridor with a device strapped around her waist and attached to each leg. Sensors in the exoskeleton detected the movement of her hip ...