Bionic knee aims to make walking easier for amputees

NCT ID NCT04787627

Completed Symptom relief Sponsor: Össur Iceland ehf Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested a new powered prosthetic knee called Power Knee in 17 people with above-knee amputations. The goal was to see if it reduces effort during walking compared to their usual microprocessor knee. Participants walked for 6 minutes and rated their exertion. The study also looked at daily activities like stairs and sitting.

What this could mean

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

Active substance: Power Knee (powered microprocessor controlled prosthetic knee)
What this could lead to: If successful, this powered knee could make walking easier and less tiring for people with above-knee amputations.
What could go wrong: This was a small, early study with only 17 people. The device may not work better for everyone, and it might be heavy or require more training.

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

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As listed by the trial registrant

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

AMPUTATION PROSTHESIS USER

Contacts and locations

Locations

Medical Center Orthotics and Prosthetics

Silver Spring, Maryland, 20910, United States
Medical Center Orthotics and Prosthetics

Boston, Massachusetts, 02134, United States

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