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Smart knees that catch you when you trip: new trial tests stumble recovery tech

NCT ID NCT07266454

Disease control Sponsor: Össur Iceland ehf 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests new stumble recovery features in prosthetic knees to help people with leg amputations avoid falls. About 50 participants will use devices like the Power Knee or Rheo Knee in lab and real-world settings. Researchers will measure how often the knee detects and responds to stumbles, and how safe and confident users feel.

What this could mean

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

Active substance
Prosthetic knee devices with stumble recovery function (e.g., Power Knee, Navii, Rheo Knee)
What this could lead to
If successful, this could lead to smarter prosthetic knees that help users recover from stumbles, reducing fall risk and improving mobility confidence.
What could go wrong
This is an early-stage device study with only 50 participants, so results may not apply to all users. The new function might not work in all real-world situations or could trigger false alarms.

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 50 people

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

Started

Dec 2025

Expected to finish

May 2030

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Ages

18 years and older

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: * 40 kg \< body weight \< 136kg * Cognitive ability to understand all instructions and questionnaires in the study * Willing and able to participate in the study and following the protocol * Age ≥ 18 years * Able to walk independently without the use of assistive device such as a cane or walker * Regular prosthesis users for at least 1 year with unilateral lower limb amputation at or below the transfemoral level (or equivalent level limb deficiency) Exclusion Criteria: * Users with pain which can affect their mobility * Users with socket comfort score less than 7 * Users with cognitive impairment * Pregnant Users * Musculoskeletal disorders or neurological conditions that affect motor function, gait or balance * Use of medications that are known to impair balance and coordination * Any other conditions deemed by the investigator to make participation unsafe

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As listed by the trial registrant

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

Amputation of lower limb Balance, falls Fall prevention

Contacts and locations

Locations

  • University of Iceland

    Reykjavik, 102, Iceland

  • Össur Iceland ehf.

    Reykjavik, 110, Iceland

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