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About

R. Kruidhof is a pioneering figure in the field of rehabilitation robotics, best known for the design and development of the LOPES exoskeleton robot for interactive gait rehabilitation. Their work centers on creating lightweight, impedance-controlled robotic systems that assist patients in recovering walking function after neurological injury. Kruidhof’s most influential contribution, the LOPES exoskeleton—detailed in a landmark 2007 paper with over 1,260 citations—introduced a novel combination of a freely translatable pelvis segment and a leg exoskeleton with actuated hip and knee joints, enabling natural, patient-cooperative therapy. To overcome the limitations of heavy, nonlinear actuators common in such devices, Kruidhof pioneered a series elastic and Bowden-cable-based actuation system, described in two highly cited papers (2005, 2006) that together have garnered over 550 citations. This innovation provided a lightweight, simple, and effective torque source, making exoskeletons more practical for clinical use. Kruidhof’s work has fundamentally shaped modern gait rehabilitation technology, bridging mechanical design and human-robot interaction to improve outcomes for patients with mobility impairments.