Quadriplegia

A condition involving paralysis or significant loss of motor function in all four limbs and the torso, typically resulting from spinal cord injury at the cervical level, neurological disease, or congenital conditions. Quadriplegia profoundly affects how individuals interact with digital technologies, often requiring alternative input methods such as eye tracking, voice control, sip-and-puff devices, or head-controlled interfaces. In virtual reality and immersive environments, users with quadriplegia face particular challenges with standard controllers and head-mounted displays that assume full arm and neck mobility.