Innovative Assistive Technologies for Tetraplegia: A Narrative Review of Systematic and Emerging Evidence

This narrative review synthesizes recent systematic evidence on assistive technologies for tetraplegia across four domains: neural/regenerative interfaces, motor/biomechanical systems, digital rehabilitation, and psychosocial frameworks. The review identifies shifts toward personalized and adaptive systems using neurotechnologies and AI, while highlighting persistent gaps in outcome standardization, longitudinal evidence, system interoperability, and equitable access.