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Surgical trick could let amputees 'Feel' their missing limb again

NCT ID NCT04063592

Disease control Sponsor: Brigham and Women's Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 10, 2026 · Updated 4 times

Summary

This study tests a new surgical procedure for people who have had a leg amputated. The surgery builds special connections between muscles to help the brain better control the remaining limb and restore a sense of position and movement. Researchers will enroll 26 adults who already have a below- or above-knee amputation and are experiencing pain or skin problems. The goal is to improve how well they can use a prosthetic and reduce muscle shrinkage.

What this could mean

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

Active substance
residual limb revision surgery (agonist-antagonist myoneural interface construction)
What this could lead to
If successful, this surgery could give amputees better control over their prosthetic limb, restore a sense of where the limb is in space, and reduce muscle wasting.
What could go wrong
This is a small, early-stage study with only 26 people. Surgery carries risks like infection, poor wound healing, or need for additional operations. It may not work for everyone.

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 26 people

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

Started

Feb 2020

Expected to finish

Sep 2026

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 65 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: * Between the ages of 18-65 * Has already undergone a standard AKA or BKA procedure * Suffers from symptoms such as: * Intractable pain * Deterioration of skin on or around stump * Suffering from other sources of discomfort arising from stump * Intact inherent wound healing * Adequate communication skills * High motivation Exclusion Criteria: * Inadequate health to undergo operative procedure using standard anesthesia (i.e. cardiopulmonary) * Individuals with impaired wound healing * Individuals suffering from extensive peripheral neuropathies * Active smokers * Individuals with a history of poor compliance * Women who are pregnant or plan to become pregnant before surgical intervention

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Conditions

The condition(s) this trial relates to.

Phantom Limb

As listed by the trial registrant

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

Amputation

How to take part

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

  1. The places running it

    3 sites. 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

  • Brigham and Women's Hospital

    RECRUITING

    Boston, Massachusetts, 02115, United States

  • Massachusetts Institute of Technology

    RECRUITING

    Cambridge, Massachusetts, 02139, United States

  • Walter Reed National Military Medical Center

    NOT_YET_RECRUITING

    Bethesda, Maryland, 20889, United States

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