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New prosthetic tech aims to stop sweat and slipping for amputees

NCT ID NCT03900845

Symptom relief Sponsor: Seattle Institute for Biomedical and Clinical Research 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested three different types of lower-leg prostheses to see which one best handles sweat and stays secure in hot, humid conditions. Twenty people with below-knee amputations wore each prosthesis for two weeks during daily activities and then walked on a treadmill in a hot room. The goal was to find a design that reduces skin problems and improves comfort for active amputees.

What this could mean

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

Active substance
prosthetic suspension systems (standard, perforated liner, and air-exchange pump device)
What this could lead to
If successful, this could point toward better prosthetic designs that keep limbs secure and healthy in hot, sweaty conditions.
What could go wrong
This is a small, completed study with only 20 participants, so results may not apply to all amputees. The devices may not work as well in real-world settings beyond the lab.

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

20 people

The number who actually took part.

Started

Feb 2019

Finished

Jun 2022

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 70 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Unilateral transtibial amputation * Been fit with a prosthesis and used it for at least six months * Wear the prosthesis for four or more ours on an average day * Ambulate without upper extremity aids * Able to walk for 30 minutes on a treadmill Exclusion Criteria: * Improper fit and suspension with current prosthesis and one cannot be achieved with clinical resources (determined at initial visit) * Current skin irritation or injury on residual limb * Osteoarthritis, injury, or pain that interferes with walking ability * Currently incarcerated * Pregnant (determined via self-report) * Inadequate cognitive function or language proficiency to consent to participate * High (\>20%) coronary heart disease risk at 10 years as determined by heir Framingham Risk Score

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As listed by the trial registrant

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

Lower extremity amputation

Contacts and locations

Locations

  • VA Puget Sound Health Care System Seattle Division

    Seattle, Washington, 98108, United States

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