For clinical environments
Trexo Theo, over-ground ambulation for pediatric clinics.
An exoskeleton that supports children in taking steps under the supervision of a trained clinician.
- FDA
- 510(k) cleared · K254198
- Indication
- 12 years and older with CP
- Evidence
- Published Trexo research
- Settings
- Clinic & community
Published research includes Trexo Home and Plus, with study populations spanning varied ages and diagnoses, including children under 12. Review the device and population evaluated in each study when considering relevance to your patient. Read the findings and study populations.
Walking
The step doesn't complete without the child.
Dial the assistive force below the child's threshold and the gait cycle can run all session without finishing a single step. The child has to push into it for the leg to swing through. Same child, same setup, two outcomes.
Without the child's effort
Support tuned below threshold. The leg never swings through.
With the child's effort
The child pushes in, the step completes, walking begins.
Same patient. Same configuration. Different intent.
A gait, tuned per child
No two children walk the same. Neither should their Trexo.
Adjust hip and knee angles, stride length, cadence and assistive force from the handheld tablet. Saved per-child settings keep every session within their comfortable, safe range.
- Per-joint angle control
- Stride length and cadence
- Assistive force balance
- Saved per-patient presets
Live data to guide every session
Step count, patient initiation and gait quality are captured in real time, so clinicians can keep sessions on track.
Battery powered, use it anywhere
Over-ground and cordless. Move between rooms, gyms and outdoor surfaces without tethering the child to a treadmill.
System capabilities
Built around a clinical session
Every Trexo Theo capability serves a phase of the session: from clinician setup, through the child's gait, to the patient-protection layer running in the background at all times.
01
Technical foundation
Pre-session setup
Adjustable walking speed
Dynamic pacing control
Customizable gait pattern
Fitted to each child
Patient sessions
Real-time measurements
02
Gait and assist
Movement and effort
Gait modes
Standing
Walking
Backward walking
High-tone walking
Treadmill walking
Assist
Strength mode
Allows extra time for the child to initiate each step
Endurance mode
Sustained over-ground walking
03
Patient protection layer
Always on
Safe range of motion
Mechanical limits enforced
Flexible weight bearing
Adaptive load management
Adjustable support force
Real-time force control
Spasticity response
Motors yield safely to detected resistance
Critical safety
Emergency E-Stop
Instant system-wide mechanical disengagement at the clinician's hand.
Sizing
Four sizes, adjustable.
Fitted to hip-to-knee and knee-to-floor length. Small and Medium share a walker frame. Measurements are taken by our clinical team before the device is built.
| Size | Hip to floor | Hip to knee | Knee to floor | Max weight |
|---|---|---|---|---|
| Small | 40–47 cm | 18 cm | 22–29 cm | 80 lb (36 kg) |
| Medium | 43–53 cm | 21–24 cm | 22–29 cm | 80 lb (36 kg) |
| Large | 55–76 cm | 26–34 cm | 29–42 cm | 125 lb (56 kg) |
| Extra Large | 62–90 cm | 29–39 cm | 33–51 cm | 150 lb (68 kg) |
Indication for Use
What Theo is cleared to do.
The Trexo Theo is a powered exoskeleton intended to perform ambulatory functions in patients 12 years and older with cerebral palsy.
The Trexo Theo is intended to be used in a community setting under the supervision of a trained companion who has been certified to the companion training program prior to use of the device. The device is also intended to be used in a clinical setting under the supervision of a trained therapist who has been certified to the therapist training program prior to use of the device.
The Trexo Theo is not intended for sports or stair climbing.
Prescription device. Federal law restricts this device to sale by or on the order of a physician. Users are re-evaluated by a physical or occupational therapist at least annually.
Patient selection
Who Theo is for, and who it isn't.
Summarized from the Trexo Theo Instructions for Use.
Contraindications
- Knee flexion contracture greater than 30°
- Severe knee valgus that cannot be corrected
- Hip flexion contracture (unable to reach 0° hip extension)
- Severe spasticity (Modified Ashworth grade 4)
- Weight-bearing restrictions, including recent orthopaedic surgery or hip subluxation concerns
- History or suspicion of lower-limb fragility fracture (e.g. osteogenesis imperfecta, osteoporosis, osteopenia)
- Unable to communicate discomfort or pain, including through non-verbal cues
Precautions
Use with clinical judgement; discuss with the prescribing physician.
- Hip dysplasia or subluxation with pain
- Severe scoliosis
- Severe joint or bony deformities
- Significant involuntary movement disorders, or uncontrolled epilepsy/seizures
- Severe concurrent illness or pressure sores
- Psychiatric or behavioural conditions that make supervised use unsafe
- Implanted programmable devices or feeding tubes (positioning and strap placement reviewed by a clinician)
Clinical network
Trusted in clinics and children's hospitals worldwide
Trexo is used by leading pediatric hospitals and clinics across North America, the Middle East and Asia-Pacific, with the European network expanding through CE-marked rollout.
- Seattle Children's Hospital, Seattle, WA
- Cincinnati Children's Hospital, Cincinnati, OH
- Good Shepherd Rehabilitation Network, Allentown, PA
- Holland Bloorview, Toronto, Canada
- Alberta Children's Hospital, Calgary, Canada
- High Hopes Pediatric Therapy, Dubai, UAE
Bring Trexo Theo to your program.
Our clinical team trains staff to Trexo trainer certification, supports fitting and progression, and shares full references and reprints on request.