REX Robotic Exoskeleton Enables Independent Walking for Paraplegics
In July 2010, REX Bionics of New Zealand publicly demonstrated the REX robotic exoskeleton, a self-supporting powered lower-limb device allowing paraplegic users to stand, walk, turn and navigate stairs without crutches, marking an early commercial step in AI-assisted assistive mobility.
Background
Powered exoskeletons for people with spinal injuries had been a research goal since at least the 1960s, but the gap between laboratory prototype and something a person could actually use at home remained wide for most of that time. The devices that existed by the late 2000s were typically tethered to external power, required constant input from a therapist, or were so heavy and unstable that the user needed forearm crutches throughout. That last constraint mattered more than it might seem: crutches require working arms and shoulders, which ruled out a large share of the people such a device was meant to help.
The underlying engineering problem was balance. Human legs are not rigid stilts. They shift weight constantly, respond to small changes in surface angle, and adjust without conscious thought. Replicating that in a machine meant reading sensor data quickly and making continuous corrections, which is computationally harder than simply moving joints through a fixed sequence. Most early devices sidestepped the problem by letting the user’s upper body take the load, rather than solving it directly.
What happened
Richard Little and Robert Irving founded REX Bionics in Auckland, New Zealand, and built the REX exoskeleton to stand on its own without crutches. The device fitted around the lower body, from the hips to the feet, and used onboard sensors along with real-time control software to keep itself upright as the user moved. A joystick let the user select actions: standing up, walking forwards, turning, going up stairs. The machine handled the balance.
In July 2010, REX Bionics gave a public demonstration of the device. Reporting at the time, including coverage in New Scientist and Engadget, described paraplegic users walking without crutches on flat ground and on stairs. The New Scientist piece from 15 July 2010 noted the self-supporting design explicitly, treating it as the feature that separated REX from competing devices then on the market. The company was positioning it for commercial sale rather than purely clinical use, which was itself unusual for powered exoskeleton technology at that stage.
The hardware attached with straps and buckles and carried its own power supply. Users could not walk at anything approaching normal speed, and the device was heavy, but neither of those things was the point. The point was that someone with no movement or sensation below the waist could stand up, walk a corridor and sit back down, without another person holding them upright and without upper-body strength to lean on crutches. For users who also had limited arm function, that made the difference between using an exoskeleton and not using one at all.
Why it mattered
REX was among the first self-stabilising powered exoskeletons to reach commercialisation, removing the need for crutches that competing devices required and broadening the potential user base to people with limited upper-body strength. Its onboard control systems used sensor fusion and real-time balance algorithms to maintain stability across uneven surfaces, demonstrating that embedded AI control could substitute for muscular leg function. The device advanced the field of assistive robotics and contributed to regulatory and clinical frameworks for powered exoskeleton approval in subsequent years.
People
Richard Little, Robert Irving
Organisations
Rex Bionics
Sources
- REX Bionics, Official Company Website.REX Bionics.Official
- REX the robotic exoskeleton aims to make wheelchairs obsolete.Engadget.Secondary
- Robot legs let paralysed people walk without crutches.New Scientist.Secondary
Cite this page
AI Achievements. (2010). REX Robotic Exoskeleton Enables Independent Walking for Paraplegics. Retrieved 2026-08-22, from https://achievements.ai/milestone/robotic-exoskeleton-bionic-legs-by-rex
@misc{achievements_robotic_exoskeleton_bionic_legs_by_rex,
title = {REX Robotic Exoskeleton Enables Independent Walking for Paraplegics},
author = {{AI Achievements}},
year = {2010},
url = {https://achievements.ai/milestone/robotic-exoskeleton-bionic-legs-by-rex}
}