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Zapping the good leg to heal the bad one: a new ACL rehab trick?

NCT ID NCT07156734

Knowledge-focused Sponsor: Schulthess Klinik 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tests whether applying mild electrical stimulation to the healthy leg can improve muscle activation in the injured leg before and after ACL surgery. Researchers will measure muscle activity in 25 patients. The goal is to see if this simple technique could help overcome muscle weakness that often slows recovery.

What this could mean

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

Active substance
Neuromuscular Electrical Stimulation (NMES) device
What this could lead to
If it works, this could point toward a new rehab technique to improve muscle recovery after ACL injury.
What could go wrong
This is a very small, early study (25 people) with no treatment outcome—it only measures muscle activity. Results may not lead to any practical benefit.

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 25 people

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

Expected to start

Sep 2025

An estimate. Start dates often move.

Expected to finish

Sep 2026

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 50 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: * Patients undergoing ACL surgery with semitendinosus tendon autograft in the Schulthess Clinic * Unilateral and primary ACL injury (with/without diagnoses of additional meniscus injury) Exclusion Criteria: * Previous surgery/ligament rupture in injured or uninjured knee or hip * Severe pain in the uninjured-side quadriceps or knee joint * Ongoing pregnancy * BMI \>30 kg/m² * Neuromuscular disease * Open wounds or tissue injuries on the anterior aspect of the thigh * Additional rupture of other knee ligaments (posterior cruciate ligament, medial collateral ligament, lateral collateral ligament) * Implanted metallic/electronic devices (cardiac pacemakers, defibrillators) * Patients getting a femoralis block (peripheral nerve block) after surgery will be excluded for the post-surgical appointment * Insufficient language comprehension

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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-injury

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. 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.

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