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Sugar water injection may ease stubborn tailbone pain

NCT ID NCT07552298

Symptom relief Sponsor: Istanbul University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests if injecting a sugar-water solution (dextrose prolotherapy) can reduce pain and improve function in people with chronic tailbone pain (coccydynia). The trial will include 40 adults who have had pain for over 6 months and haven't gotten better with standard treatments. Participants will receive either the sugar-water injection or a placebo to see if it helps with sitting and daily activities.

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 40 people

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

Started

Jun 2025

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 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: * Patients with coccydynia lasting longer than 6 months, * Those unresponsive to at least 6 months of conventional conservative treatment methods, * Those with coccygeal tenderness on palpation, * Patients aged between 18 and 65 years. Exclusion Criteria: * Patients with a history of trauma within the last 3 months or postpartum coccydynia, * Those with lesions or infections at the injection site, * Those with dislocation or organic bone pathology of the coccyx observed on X-ray imaging, * Those with fecal or urinary incontinence, * Patients with poorly controlled diabetes mellitus, * Those with a history of malignancy, * Patients with a bleeding tendency (acquired or hereditary) \[INR \> 2 in patients using warfarin\], * Those with a history of myelomeningocele, * Those diagnosed with spina bifida, * Patients with rheumatologic disease, * Those who have undergone coccyx injection or ganglion block within the last 3 months, * Patients with severe comorbidities.

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Conditions

The condition(s) this trial relates to.

coccygodynia

As listed by the trial registrant

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

Coccydynia

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 Istanbul Faculty of Medicine, Department of Physical Medicine and Rehabilitation

    RECRUITING

    Istanbul, Turkey (Türkiye)

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