New study aims to find best procedure for stubborn tailbone pain
NCT ID NCT07509593
First seen Jun 27, 2026 · Last updated Jul 10, 2026 · Updated 2 times
Summary
This study compares two minimally invasive radiofrequency ablation (RFA) techniques for chronic tailbone pain (coccydynia) that hasn't improved with other treatments. Fifty participants will be randomly assigned to receive either a single-level or double-level RFA procedure. Researchers will measure pain relief and quality of life for up to two months after the procedure to see which method works better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- radiofrequency ablation
- What this could lead to
- If successful, this study could show which RFA technique provides better pain relief for chronic tailbone pain, helping doctors choose the best treatment.
- What could go wrong
- This is a small, early-stage trial with only 50 participants and short follow-up (2 months). Results may not apply to everyone, and pain relief may vary.
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
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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
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2026
- Expected to finish
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Nov 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Patients with coccygeal pain lasting longer than 2 months * Patients who experienced significant pain relief (≥50% reduction) after a ganglion impar block performed within the last 6 months, but whose pain has subsequently recurred * Patients who provide informed consent to participate in the study Exclusion Criteria: * Acute coccydynia (pain duration less than 2 months) * Patients who did not achieve significant benefit (\<50% pain reduction) from prior ganglion impar block * Patients with severe neurological or psychiatric disorders that impair communication or ability to follow instructions
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Marmara University Faculty of Medicine
RECRUITINGIstanbul, PENDİK, 34899, Turkey (Türkiye)
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