Hiroaki Arai

Ohkawara Neurosurgical Hospital, Shinshu University

Papers

Total Citations

H-Index

About

Hiroaki Arai is a pioneering researcher at the intersection of rehabilitation robotics and differential geometry, whose work spans both clinical neurorehabilitation and theoretical surface robotics. His most impactful contribution is in stroke rehabilitation, where he conducted a landmark study on the Hybrid Assistive Limb (HAL) robot suit for acute-phase stroke patients. In this 2015 work, Arai demonstrated that integrating HAL into physical therapy significantly improved comfortable 10-meter walking speed compared to conventional therapy alone, providing early evidence that robotic exoskeletons can enhance motor recovery in the critical acute phase of stroke. This study, with 3 citations, has informed subsequent rehabilitation protocols. Concurrently, Arai has advanced the theoretical foundations of surface robotics through his 2021 work on S-isothermic surfaces, exploring how differential geometric principles can enable robots with multiple degrees of freedom to perform complex deformations. By bridging clinical application with mathematical theory, Arai’s research offers a unique dual perspective—improving patient outcomes through robotic assistance while expanding the fundamental design principles for next-generation surface robots.