Ma Xunju (R) with the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, helps his colleague Peng Ansi put on a robotic exoskeleton developed by the institute outside the institute Tuesday. The institute has developed four types of such suit, which returns movement to wearers’ hips and knees with small motors attached to standard orthotics. Wearers can control the movement of each leg and walk by pushing buttons integrated into a pair of crutches. The device will help handicapped people and the elderly who have difficulty moving.Xinhua