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Diabetes may change how ankle numbing works during surgery

NCT ID NCT07404124

Knowledge-focused Sponsor: Fatih Sultan Mehmet Training and Research Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looks at how well ankle numbing (ankle block) works in people with and without diabetes during foot or ankle surgery. Researchers will measure how fast the numbing starts, how much pain medicine is needed afterward, and if blood sugar control plays a role. The goal is to help doctors better manage pain for diabetic 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 46 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Nov 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 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: * Adults aged 18 years and older. * Patients scheduled for lower extremity surgery under ultrasound-guided ankle block as part of routine clinical care. * Patients able to provide written informed consent. * Availability of complete perioperative data including blood glucose levels, -HbA1c values, pain scores, and postoperative analgesic consumption. Exclusion Criteria: * Refusal or inability to provide informed consent. * Failure of ankle block requiring conversion to another anesthesia technique. * Known coagulation disorders contraindicating peripheral nerve block. * Active infection at the site of block application. * Chronic opioid or analgesic use, chronic alcohol use, or substance abuse. * History of diabetic ketoacidosis or hyperosmolar hyperglycemic state. * Severe renal or hepatic insufficiency. * Known allergy to local anesthetics such as lidocaine or bupivacaine. * Inability to perform perioperative blood glucose monitoring. * Cognitive impairment or psychiatric conditions interfering with study participation or data collection.

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Conditions

The condition(s) this trial relates to.

diabetes mellitus diabetic neuropathy

As listed by the trial registrant

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

Diabetes mellitus Diabetic neuropathy Postoperative 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

  • Istanbul Provincial Health Directorate Fatih Sultan Mehmet Training and Research Hospital

    Istanbul, Turkey (Türkiye)

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