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Can ultrasound make botox injections more precise for stiff muscles?

NCT ID NCT07803276

Disease control Sponsor: Universidade Federal Fluminense 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 03, 2026 · Last updated Sep 04, 2026 · Updated 1 time

Summary

This trial tests whether using ultrasound to guide botulinum toxin injections into spastic leg muscles works better than the standard method of relying on touch and anatomical landmarks. Researchers will give 40 adults with spastic paraplegia two rounds of injections, one with each technique, separated by a 16-week break. They will measure changes in muscle stiffness, mobility, pain, and quality of life to see if ultrasound guidance leads to greater improvement.

What this could mean

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

Active substance
Botulinum toxin type A (abobotulinumtoxinA) injected into spastic leg muscles, given either with ultrasound guidance or by standard palpation.
What this could lead to
If ultrasound guidance proves better, it could lead to a more precise injection method that improves mobility and reduces pain for people with spastic paraplegia.
What could go wrong
This is a small, early-stage crossover study with 40 participants, so results may not apply broadly. The benefit of ultrasound may be modest, and injections carry risks like muscle weakness or pain.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 40 people

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

Started

Apr 2026

Expected to finish

May 2027

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

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 * Age over 18 years * Clinical diagnosis of spastic paraplegia * Spasticity with Ashworth Scale score between 2 and 3 in at least one muscle group with indication for botulinum toxin treatment * Muscle strength ≥ 3 on the Muscle Strength Assessment Scale * Enrollment in a rehabilitation program * For women of childbearing potential, a negative beta-hCG test at the time of injection Exclusion Criteria * Concomitant neuromuscular disorders * History of hypersensitivity to botulinum toxin * Active infection at the injection site * Ashworth Scale score of 4 * Pregnancy or breastfeeding

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Conditions

The condition(s) this trial relates to.

hereditary spastic paraplegia paraplegia

As listed by the trial registrant

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

Spastic paraplegia

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

  • Instituto de Neurologia Deolindo Couto

    RECRUITING

    Rio de Janeiro, Rio de Janeiro, 22290-140, Brazil

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