New study aims to better understand muscle weakness after ACL injury
NCT ID NCT06945133
First seen Jun 27, 2026 · Last updated Aug 21, 2026 · Updated 2 times
Summary
This study will measure how much the thigh muscle (vastus medialis) is inhibited in people who recently tore their ACL. Researchers want to see if this muscle inhibition matches a specific classification system. Ninety adults with a fresh ACL tear will have their muscle activity measured with surface electrodes and a device that checks muscle stiffness. The goal is to better understand muscle function after injury, not to test a treatment.
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 90 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
-
Oct 2026
An estimate. Start dates often move.
- Expected to finish
-
Apr 2028
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 44 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 Hide 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: * Patient, male or female, aged ≥ 18 years and \< 45 years * Patient with an ACL rupture confirmed by MRI * Patient with an ACL rupture ≤ 30 days old * French speaking patient who does not object to the use of his/her data Exclusion Criteria: * Patient with previous ipsi or contralateral knee injury/surgery * Patient with multi-ligament injury * Pregnant or breastfeeding woman
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.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
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
-
Hôpital Privé Jean Mermoz
Lyon, 69008, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Which screw keeps the knee tunnel from widening after ACL surgery?
- Could hidden knee bacteria explain why ACL surgeries fail?
- Which fixation method best heals a reconstructed ACL?
- Bone scaffold may help ACL grafts heal stronger
- Why some knees freeze after ACL surgery: scientists probe muscle inhibition
- Inside the knee: new navigation tech could make ACL surgery more precise