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Sound waves vs. stroke spasticity: scientists probe how it works

NCT ID NCT06311526

Knowledge-focused Sponsor: Istituto Auxologico Italiano 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 pilot study looked at how focused sound waves (shock wave therapy) reduce muscle tightness in the arm after a stroke. Twelve adults who had a stroke at least six months ago received the treatment. Researchers measured changes in muscle stiffness, nerve signals, and arm function to see whether the therapy works by altering muscle tissue or by calming overactive nerves. Understanding this could help tailor the treatment to the right patients in the future.

What this could mean

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

Active substance
Extracorporeal shock wave therapy (sound wave pulses applied to spastic muscles)
What this could lead to
If successful, this could help doctors choose the best patients for shock wave therapy based on muscle or nerve tests, making treatment more personalized.
What could go wrong
This is a very small pilot study (12 people) with no control group, so results may not apply broadly. The therapy's effects are temporary (up to 12 weeks) and the mechanism remains uncertain.

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.

Participants

12 people

The number who actually took part.

Started

May 2023

Finished

Mar 2025

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.

Who is studied

Stroke patients with an upper limb spastic paresis.

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 \> 18 years * first hemispheric stroke at least six months ago * spasticity of wrist and elbow flexors muscles with grade 1 to 3 of the Modified Ashworth Scal * no botulinum toxin injection in the previous six months * ability to give informed consent Exclusion criteria * anticoagulant medicine * presence of a pacemaker, an implantable cardioverter defibrillator or other medical devices * active cancer * skin lesions at the site of shock wave administration * an major neurological disease in addition to the hemiparesis (e.g. spastic hemiparesis in a patient who had Parkinson's disease before their stroke).

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Conditions

The condition(s) this trial relates to.

hemiplegia Muscle Spasticity Paresis spastic hemiplegia stroke disorder

As listed by the trial registrant

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

Hemiparesis Hemiplegia Spasticity as sequela of stroke Stroke Upper limb hypertonia

Contacts and locations

Locations

  • IRCCS Istituto Auxologico Italiano

    Milan, MI, 20122, Italy

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