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Back surgery pain relief: simple nerve block cuts morphine use?

NCT ID NCT04473508

Symptom relief Sponsor: Centre Hospitalier Universitaire de Nīmes Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a nerve block using the drug ropivacaine could reduce pain and the need for morphine after lumbar spine surgery. Fifty adults having back surgery received either the nerve block or a placebo (salt water) in addition to standard anesthesia. The goal was to see if the block leads to less pain and fewer side effects after the operation.

What this could mean

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

Active substance
ropivacaine
What this could lead to
If it works, this could offer a simple way to reduce pain and the need for strong painkillers after back surgery.
What could go wrong
This is a small, single-center study with only 50 participants. The nerve block may not work better than placebo, and there is a risk of side effects like nausea or bleeding.

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

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

50 people

The number who actually took part.

Started

Nov 2019

Finished

Sep 2021

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 80 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: * age\> 18years and \<80 years * lumbar spine surgery (2-4 levels) * posterior approach * ASA 1-3 Exclusion Criteria: * refusal * age \< 18yrs * \<50 kg and \>120 kg * pregnant * renal or hepatic severe desease * ASA 4 * no French speaking * emergency surgery * local or systemic infection * surgical resumption of the surgical site * surgery involving a thoracic approach * allergy to local anesthetics

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As listed by the trial registrant

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

Adverseevent Morphine Pain relief Spine surgery

Contacts and locations

Locations

  • CHU Nimes

    Nîmes, Gard, 30 000, France

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