Conclusion
We investigated a novel robotic arm therapy system in combination with an augmented reality serious game. The system demonstrated to be feasible in patients with impairments of the upper extremity from neurological causes and good cognitive function. Notably, the good acceptance and perception of the game using the HoloLens is promising.Despite the prototype stage of the RobExReha device, the system’s usability and safety was mostly rated not significantly different from an established device on the market, which is a considerable achievement. From a therapist’s perspective, the lack of reliability in terms of system instabilities largely contributed to lower usability ratings. Future developments of technology-assisted therapy devices in neurorehabilitation should thus focus on developing stable, simple, and easy-to-use systems.