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New nerve block could reduce opioid use after knee surgery

NCT ID NCT07629388

Symptom relief Sponsor: Ramsay Générale de Santé 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This trial tests whether a combined nerve block can improve pain relief after total knee replacement while preserving leg strength. 240 adults scheduled for knee surgery will receive either the combined block or a standard saphenous nerve block. Researchers will measure opioid use, pain levels, and how quickly patients can stand and walk after surgery.

What this could mean

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

Active substance
Ropivacaine with clonidine and dexamethasone
What this could lead to
If it works, this could offer a better way to manage pain after knee replacement, reducing opioid use and helping patients recover leg strength faster.
What could go wrong
This is a small, early-stage trial comparing two nerve block techniques. The combined block may not provide better pain relief or could cause unexpected side effects. Results may not apply to all patients.

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 240 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

May 2027

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 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: * Adult patients aged over 18 years. * Scheduled for total knee arthroplasty with multimodal analgesia. * Affiliated with or benefiting from a social security system. * Able to understand the study information and provide written informed consent. Exclusion Criteria: * Emergency surgery. * Weight under 50 kg. * Body mass index over 40 kg/m². * Contraindication to nefopam, non-steroidal anti-inflammatory drugs, local anesthetics, or morphine. * Preoperative opioid use. * Antidepressant or gabapentinoid treatment. * Other planned surgical or medical procedures during the study period. * Participation in another clinical trial, or currently in an exclusion period from another trial. * Inability to understand study information for linguistic, psychological, cognitive, or literacy reasons. * Pregnancy, possible pregnancy without effective contraception, or breastfeeding. * Protected adults, including those under guardianship, curatorship, legal protection, detention, or otherwise unable to give informed consent.

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Conditions

The condition(s) this trial relates to.

agnosia Pain, Postoperative

As listed by the trial registrant

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

Pain after total knee arthroplasty Pain management

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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 ↗

  3. 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 Dijon Bourgogne

    Dijon, 21000, France

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