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Can a simple exam replace needles for piriformis diagnosis?

NCT ID NCT07473349

Diagnosis Sponsor: Istanbul University - Cerrahpasa 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aims to see if common physical exams and diagnostic criteria can accurately identify piriformis syndrome, a cause of buttock pain. Researchers will enroll 75 adults with gluteal pain and compare exam results to an ultrasound-guided lidocaine injection into the piriformis muscle. If pain drops by half after the injection, it confirms the syndrome. The goal is to find reliable, non-invasive ways to diagnose this condition.

What this could mean

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

Active substance
lidocaine
What this could lead to
If successful, this could lead to a reliable, non-invasive way to diagnose piriformis syndrome, reducing the need for injections.
What could go wrong
This is a small, early-stage study with only 75 participants. The injection reference standard may not be perfect, and 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 75 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

Sep 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 to 75 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: * Adults aged 18 to 75 years * Presentation with gluteal pain * Pain on palpation in the piriformis region Exclusion Criteria: * History of injection to the lumbar, hip, or gluteal region within the last 3 months,including steroid, hyaluronic acid, or similar injections * History of hip surgery * Presence of active inflammatory rheumatic disease, including rheumatoid arthritis, ankylosing spondylitis, polymyalgia rheumatica, vasculitis, or similar conditions * Active skin or subcutaneous soft tissue infection in the gluteal region * Use of anticoagulant therapy that may contraindicate injection * Presence of a bleeding disorder * Uncontrolled diabetes mellitus and/or hypertension * History of neurological disease * Pregnancy or lactation * Presence of a psychiatric disorder * Known allergy to the injection agents * History of malignancy

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Conditions

The condition(s) this trial relates to.

piriformis syndrome sciatica

As listed by the trial registrant

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

Gluteal pain Piriformis syndrome

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 University-Cerrahpasa, Cerrahpasa Medical Faculty

    Istanbul, Turkey (Türkiye)

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