- Lerner, Z.F., Gasparri, G.M., Bair, M.O., Lawson, J.L., Luque, J., Harvey, T.A., Lerner, A.T., An untethered ankle exoskeleton improves walking economy in a pilot study of individuals with cerebral palsy. IEEE Transactions on Neural Systems and Rehab Engineering.
- Gasparri, G.M., Luque, J., Lerner, Z.F., Proportional Joint-Moment Control for Instantaneously-Adaptive Ankle Exoskeleton Assistance. IEEE Transactions on Neural Systems and Rehab Engineering.
- Lerner, Z.F., Harvey, T.A., Lawson, J.L., A Battery-Powered Ankle Exoskeleton Improves Gait Mechanics in a Feasibility Study of Individuals with Cerebral Palsy. Annals of Biomedical Engineering.
- Lerner, Z.F., Conner, B.C., Remec, N.M., Adaptation of Gait Energetics to Ankle Exoskeleton Assistance Within and Across Visits: A Clinical Case Series. IEEE 2019 Wearable Robotics Association Conference (WearRAcon).
- Gasparri, G.M., Bair, M.O., Libby, R., Lerner, Z.F., Verification of a Robotic Ankle Exoskeleton Control Scheme for Gait Assistance in Individuals with Cerebral Palsy. IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS).

energize every step
Transforming the treatment of movement disorders with intelligent, wearable robots.

At BiOMOTUM
We envision a world where children and adults with movement challenges lead healthy, productive and socially satisfying lives.

50 Million
50 million people in the US have a physical disability that limits their mobility, negatively impacting their health. Many of these individuals are unable to walk unassisted or go up and down stairs.
The Current Solution
Physical Therapy
Physical Therapy (PT) is essential for treating movement disorders and there is a strong dose-response relationship between the amount of therapy and improvements in mobility.
Insufficient Dose
Unfortunately, most individuals do not receive enough PT and the delivery of PT can be inefficient, limiting the dose and positive changes in mobility.
There is currently no viable way to provide a sufficient dose of active gait training that will lead to long-term improvements in mobility.
Our Solution
A lightweight, wearable, powered device for on-demand gait training
Increased therapy dose
better mobility
Greater independence
positive self-esteem
Community
engaging & informative
Introducing our Robotic Ankle Assist Device
The RA2D



Get Assistance. Get Better.
Assist & Go
Ultra light powered assistance
Works everywhere
Resist-to-Restore
Targeted neuro rehab
Get stronger
Why RA2D?
Low Cost
Innovative, elegant design
Common motors/drives
Go Anywhere
Robust controls
Variable terrain and stairs
Connected
Mobility data
User community
Ground Breaking Results
Taken at the beginning and end of a 3x/week for 4-weeks intervention, these videos show the benefit of using the RA2D in Resist-to-Restore mode. Note the increase in self-selected walking speed and improved posture. The child is not using the RA2D in these videos.
Able to keep up
Makes walking easier
Improved function
Innovative Technology
Lightest device available
Non-dilutive capital
NIH & NSF
Utility Patents Pending
User Testomonials



About Us
History
Co-founders Zach Lerner and Ray Browning met in 2011 at Colorado State University. Since that time, Zach and Ray have been focused on understanding and optimizing pediatric mobility. As former elite athletes, they both have a passion for movement and the vision that all individuals have physical experiences that allow them to see and achieve their potential. Over the last several years, Zach has created robotic assistive devices that offer a lightweight, portable and effective way to improve mobility in children with Cerebral Palsy. These devices are the foundation for BiOMOTUM.
Today
Our mission is to improve mobility and rehabilitation outcomes in individuals with movement disorders. We aim to accomplish this mission by leveraging a user-centered design approach, gathering insight from affected individuals and clinicians, to create, produce and distribute intelligent, holistic and engaging wearable systems. Our patent-pending technology is built on a foundation of rigorous clinical research. Our systems are designed to improve neuromuscular function and quality of life across the lifespan. We have a functional device that has proven mobility benefits.
Tomorrow
Leadership Team

CEO & Co-Founder
Ray Browning, PhD
30+ yrs academic and industry R&D, startups, mobility expert

CTO & Co-Founder
Zach Lerner, PhD
Inventor of device, Univ. faculty, assistive device expert

VP of Market development
Phil Astrachan
Wearable exoskeleton industry veteran, business development expert
Support
Funding



Services

Pitch Events

