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Power leg: can a motorized prosthesis make walking easier?

NCT ID NCT07584707

Symptom relief Sponsor: Northern Arizona University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will test whether a motorized leg prosthesis helps people with lower-limb amputation walk better, balance more easily, and perform everyday activities like climbing stairs or walking on slopes. Twenty participants will try the powered device and compare it to their regular passive prosthesis. The goal is to see if the motorized version improves speed, control, and energy use during movement.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Motorized lower-limb prosthesis
What this could lead to
If it works, this could lead to a powered prosthetic that makes walking, climbing stairs, and navigating uneven terrain easier and more natural for people with leg amputations.
What could go wrong
This is a very small early-stage trial (20 people) testing a device that is still experimental. It may not show clear benefits over a standard passive prosthesis, and the device could have technical issues or be uncomfortable.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Mar 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 85 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Individuals age 18 to 85 with or without lower-limb amputation * Able to understand and follow simple directions in English based on ability to provide verbal consent * Able to walk at least 30 feet with or without a walking aid * Able to safely fit into a device configuration and tolerate assistance * Individuals with lower-limb amputation must receive physician approval to participate in the study. Exclusion Criteria: * Any neurological, musculoskeletal (other than lower-limb amputation) or cardiorespiratory injury, health condition (including pregnancy), or diagnosis that would affect the ability to walk as directed for short periods of time. * Participant or caregiver report that the perspective participant's physician has recommended that they not engage in moderate intensity walking exercise. * Subject mass greater than the engineered limit of the device (90 kg or 198 lbs) Note: No exclusions will be made on the basis of race, gender or ethnic background.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Ambulation with the "take home" or passive prosthesis Ambulation with the motorized prosthesis in the "off" configuration Ambulation with the motorized prosthesis in the "powered" condition Ambulation with the motorized prosthesis in the "transparent" condition

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Northern Arizona University

    Flagstaff, Arizona, 86001, United States