Why some knees freeze after ACL surgery: scientists probe muscle inhibition

NCT ID NCT07659561

Not yet recruiting Knowledge-focused Sponsor: GCS Ramsay Santé pour l'Enseignement et la Recherche Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at why some people have trouble activating their quadriceps (front thigh muscle) after ACL surgery, a condition called arthrogenic motor inhibition (AMI). Researchers will use surface electrodes to measure muscle activity in both legs of 40 patients who had ACL surgery at least 3 weeks ago. By comparing those with and without AMI, they hope to better understand this barrier to recovery.

What this could mean

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

What this could lead to: If successful, this could help doctors better diagnose and treat muscle inhibition after ACL surgery, potentially improving rehabilitation outcomes.
What could go wrong: This is a small, early-stage observational study with only 40 participants. It measures electrical activity, not clinical recovery, so results may not directly change treatment.

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

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for ACL - ANTERIOR CRUCIATE LIGAMENT RUPTURE are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

Anterior Cruciate Ligament Injuries

As listed by the trial registrant

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

ACL - ANTERIOR CRUCIATE LIGAMENT RUPTURE

Contacts and locations

Locations

Hôpital Privé Jean Mermoz

Lyon, 69008, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.