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Nerve-Freezing technique offers new hope for stroke survivors with muscle stiffness

NCT ID NCT06958289

Symptom relief Sponsor: Sue Peters Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 a procedure called cryoneurolysis, which uses a needle to freeze and break down a nerve that causes muscle tightness (spasticity) after a stroke. The goal is to see if this treatment can provide long-term relief and how it affects brain function over six months. Researchers will study 25 stroke survivors using brain scans and magnetic stimulation to understand the changes. The treatment is already approved in Canada for this use.

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 25 people

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

Started

Aug 2025

Expected to finish

May 2028

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: * have increased range of motion or reduced spasticity with diagnostic nerve block, * have no undesired loss of function with a diagnostic nerve block, * score 2 or higher in the Modified Ashworth scale, * have at least flickers of movement in the upper extremity, * have not received botulinum-A neurotoxin within the past 3 months, * if on anti-spastic medication, maintaining anti-spastic medications on a stable schedule over the course of the follow up period, and * they can understand and follow instructions in English. Exclusion Criteria: * have contraindications to TMS (i.e., history of seizure, pregnancy) or 3T MRI (i.e., certain metallic implants), * are unable to provide informed consent (i.e., severe cognitive impairment), * receive any toxin injections for spasticity (Botulinum-A Toxin or equivalent) within 3 months of initial baseline assessments or at any time over the course of the follow-up period. * Have previously undergone any nerve-specific interventions (phenol neurolysis, radio-frequency ablation, or cryoneurolysis) for spasticity on a nerve that will be targeted for this study.

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As listed by the trial registrant

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

Spasticity as sequela of stroke

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

  • Parkwood Institute

    RECRUITING

    London, Ontario, N6C 0A7, Canada

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