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NCT Number: NCT07190092

Deep Anterior Cerebellar Stimulation in Treatment of Poststroke Spasticity and Motor Function Impairment.

The aim of this clinical trial is to determine whether deep brain stimulation (DBS) interventions improve rehabilitation and functional recovery in patients with post-stroke spasticity who meet the other inclusion criteria listed below.

Primary question(s) to be answered:

Is DBS stimulation effective in treating post-stroke spasticity? What stimulation frequency is most effective in treating post-stroke spasticity?

Study participants will:

* Undergo surgery to implant a DBS electrode targeting the DRTt (dentate-rubro-thalamic tract ) in close proximity of the dentate nucleus of the cerebellum ipsilateral to the spastic side of the body. * Each patient will then receive an initial stimulation frequency of 130 Hz (arm 1) and will be assigned to a 4- to 6-week rehabilitation program. After this period, the participant will return for a follow-up visit for a clinical evaluation. * The frequency will then be changed to 70Hz (arm 2). Patients who have undergone this change will also undergo a rehabilitation period of 4 to 6 weeks. After this period, they will return to the Clinic for a follow-up evaluation. * The frequency will then be changed to 30Hz (arm 3). Patients who have undergone this change will also undergo a rehabilitation period of 4 to 6 weeks.

Researchers will compare the results obtained from patients in each arm to determine the clinical effects of stimulation and whether they are dependent on the stimulation frequency.

Recruiting

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Department of Neurosurgery and Neurology University Hospital nr 2 Collegium Medicum Nicolaus Copernicus University

Bydgoszcz, 85-168, Poland

Location status: Recruiting

Location contact

Magdalena Jabłońska, M.D.

CONTACT

[email protected]

+48 784 019 156

Magdalena Jabłońska, MD

SUB_INVESTIGATOR

Oskar Puk, MD

SUB_INVESTIGATOR

Paweł Sokal, Ph.D.

CONTACT

[email protected]

+48600954415

Paweł Sokal, Ph.D.

PRINCIPAL_INVESTIGATOR

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • One time stroke that occurred 9-36 months ago
  • Ischemic or hemorrhagic stroke
  • Spastic paresis of at least one limb
  • At least 3 months of poststroke rehabilitation in the past
  • No improvement of spasticity/motor function for at least 3 months

Exclusion criteria

  • Seizures after the stroke
  • Depression
  • Severe sensory deficits
  • Anosognosia
  • Moderate to severe hemispatial neglect
  • Others contraindications for the DBS procedure, e.g. coagulopathy, decompensated chronic disease, etc.
  • Contraindication for MRI
  • No poststroke rehabilitation

Treatment and study plan

Deep brain stimulation electrode implantation with an electrode target in the dentate nucleus

Procedure

The intervention will involve implantation of a directional electrode with a target in the dentate nucleus of the cerebellum, ipsilateral to the limbs affected by spasticity. Electrode implantation will be performed using a stereotaxic frame, following prior planning of the electrode trajectory and tractography of the dento-ruborothalamic tract using a planning station. The procedure will be performed under general anesthesia. The IPG stimulator will be placed in the subclavicular region.

Primary outcomes

  1. Increase of FMA score after the rehabilitation with stimulation dentate-rubro-thalamic tract.

    Time frame: 6 weeks

    Increase of FMA score after the rehabilitation

Secondary outcomes

  1. Decrease of Ashworth Scale score after the rehabilitation with dentate-rubro-thalamic tract

    Time frame: 6 weeks

    Decrease of Ashworth Scale score

  2. Improvement in motor function achieves in Motor Assessment Scale MAS with stimulation dentate-rubro-thalamic tract

    Time frame: 6 weeks

    Improvement in motor function achieves in Motor Assessment Scale

  3. Improvement in Modified Rankin Scale after the rehabilitation with stimulation of dentato-rubro-thalamic tract

    Time frame: 6 weeks

    Improvement in Modified Rankin Scale

Study contacts

Contact information is provided by the study sponsor or research team.

Paweł Sokal, Ph.D.

CONTACT

[email protected]

+48600954415

Sponsors and collaborators

Lead sponsor

Jan Biziel University Hospital No 2 in Bydgoszcz

Other

Registry information

Important dates

Study start
2024
Primary completion
2027
Study completion
2028
First posted
Sep 24, 2025
Registry last updated
Sep 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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