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Which nerve block offers better pain relief after ACL surgery?

NCT ID NCT03033589

Symptom relief Sponsor: Henry Ford Health System 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This trial compares two types of nerve blocks—femoral nerve block and adductor canal block—for controlling pain after anterior cruciate ligament (ACL) reconstruction. Participants receive one of the two blocks before surgery, and researchers track their pain levels and painkiller use for three days after the operation. The goal is to find which block provides better pain relief while preserving muscle strength.

What this could mean

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

Active substance
bupivacaine (Marcaine)
What this could lead to
If one block works better, it could improve pain control and reduce opioid use after ACL surgery.
What could go wrong
This is a small, single-center study. Results may not apply to all patients or other types of surgery.

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

78 people

The number who actually took part.

Started

May 2016

Finished

Dec 2017

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

16 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Primary ACL Reconstruction with use of Bone-Patellar-Bone Autograft * Age 16 or older Exclusion Criteria: * Patients under 16 * The use of Allograft, * The use of hamstring autograft * The use quadriceps autograft * Patients allergic to active ingredients in the injection.

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Conditions

The condition(s) this trial relates to.

agnosia Pain

As listed by the trial registrant

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

Pain

Contacts and locations

Locations

  • Henry Ford Health System - CFP 642

    Detroit, Michigan, 48202, United States

More trials for these conditions

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