A robotic hand exoskeleton helps stroke patients integrate rehabilitation exercises into their everyday lives. Scientists at ETH Rehabilitation Engineering Laboratory in Switzerland have invented a robotic system that they say could fundamentally change the daily lives of stroke patients. According to the ETH scientists, one in six people will suffer a stroke in their lifetime; two thirds of those affected suffer from paralysis of the arm. Intensive clinical training, including robot-assisted therapy, can help patients regain a degree of limited control over their arms and hands. But now Roger Gassert, Professor of Rehabilitation Engineering at ETH Zurich, has a better idea.