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Scientists map thigh nerve block spot using ultrasound and cadavers

NCT ID NCT07247591

Knowledge-focused Sponsor: Ankara Etlik City Hospital 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study aims to pinpoint the exact start and end of the adductor canal, a key area for numbing the thigh during knee surgery. Researchers will measure distances from the hip bone to the knee using ultrasound in 200 patients and compare these with measurements from cadavers. The goal is to create a simple formula to guide doctors to the best injection site, making nerve blocks more consistent and effective.

What this could mean

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

What this could lead to
If successful, this could give doctors a more reliable way to locate the adductor canal for nerve blocks, potentially improving pain management after knee surgery.
What could go wrong
This is an early-stage anatomical study, not a treatment trial. The findings may not translate into better patient outcomes or work for all body types.

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.

Participants

About 200 people

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

Expected to start

Nov 2025

An estimate. Start dates often move.

Expected to finish

Feb 2026

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

He study at Etlik City Hospital will include patients who meet the following criteria: ASA classification of 1, 2, or 3, indicating individuals who are healthy or have mild to moderate systemic disease without major functional limitation; a BMI below 35 to exclude participants with obesity-related comorbidities; and an age range of 18 to 65 to ensure a broad yet controlled sample while avoiding age-related confounding factors. All participants must also provide informed consent, confirming their understanding of the study's purpose, procedures, and potential risks.

Ages

18 to 65 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: ASA 1-2-3 patients BMI \<35 Ages 18-65 Those willing to participate in the study Exclusion Criteria: Those unwilling to participate in the study Pregnant women BMI \>35 ASA 4-5-6 patients

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As listed by the trial registrant

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

Adductor canal block Anatomy

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

  • Ankara Etlik City Hospital

    Ankara, Turkey (Türkiye)

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