Clinical Study of the Efficacy and Safety of Spinal Cord Stimulation in Patients With Limb Motor Dysfunction Following Stroke

May 31, 2026 updated by: Second Affiliated Hospital, School of Medicine, Zhejiang University
To assess the efficacy and safety of spinal cord stimulation in treating post-stroke limb motor disorders, we propose to conduct a clinical trial. This study seeks to accumulate additional clinical experience with spinal cord stimulation in patients suffering from post-stroke limb motor disorders and to enhance their quality of life.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
6

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Zhejiang
      • Hangzhou, Zhejiang, China, 310009
        • Recruiting
        • The Second Affiliated Hospital, Zhejiang University School of Medicine
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Hemiparesis resulting from a single ischemic or hemorrhagic stroke, with a disease duration of ≥6 months.
  2. Aged between 20 and 80 years (inclusive).
  3. Received regular rehabilitation therapy after stroke but with poor recovery of limb motor function; Fugl-Meyer Assessment upper extremity score >7 and <45, and lower extremity score >5 and <30.
  4. Partially preserved sensory function.

Exclusion Criteria:

  1. Severe systemic diseases (e.g., neurological disorders other than stroke, cancer, severe circulatory or respiratory diseases, liver or kidney failure, etc.) or other conditions that may impair the subject's motor or cognitive function.
  2. Presence of spinal cord-related nerve compression that could cause severe functional impairment.
  3. Women who are pregnant or breastfeeding.
  4. Use of anticoagulant, antiplatelet, antispasmodic, or antiepileptic medications prior to enrollment or during the study period.
  5. Severe joint contracture that, in the clinical investigator's opinion, precludes participation in the study.
  6. Severe mental illness or intellectual disability that prevents cooperation with treatment or follow-up questionnaires, with a Mini-Mental State Examination (MMSE) score <24.
  7. Presence of other implanted medical devices.
  8. Severe claustrophobia.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: spinal cord stimulation group
Device: Spinal cord stimulator
This trial is a single-arm, self-controlled exploratory clinical study. Participants will undergo surgical implantation of spinal cord stimulation electrodes and receive programming and optimization of spinal cord stimulation parameters.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Fugl-Meyer Assessment (FMA)
Time Frame: One year
One year

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Active and passive range of motion (A/PROM)
Time Frame: One year
One year
Surface electromyography (sEMG):Mean amplitude
Time Frame: One year
Mean surface electromyography (sEMG) amplitude, measured in microvolts (µV), will be derived from recordings of lower-limb muscles, including the tibialis anterior, gastrocnemius, quadriceps femoris, and biceps femoris. Recordings will be obtained during standardized lower-limb motor tasks or voluntary muscle contractions. Measurements will be analyzed separately for each muscle and, where applicable, for each side. This parameter will be used to assess changes in lower-limb muscle activation after spinal cord stimulation. Higher values indicate greater muscle activation.
One year
Modified Ashworth Scale (MAS)
Time Frame: One year
The Modified Ashworth Scale (MAS) will be used to assess muscle tone and spasticity in lower-limb muscle groups, including hip flexors, hip extensors, hip adductors, hip abductors, knee flexors, knee extensors, ankle plantar flexors, and ankle dorsiflexors. MAS grades range from 0 to 4, with an additional intermediate grade of 1+. For statistical analysis, MAS grades may be converted to a 0-5 ordinal score, where 0 indicates no increase in muscle tone and 5 indicates that the affected limb is rigid in flexion or extension. Higher scores indicate greater muscle tone and more severe spasticity. Scores will be assessed separately for each side and compared across baseline and follow-up assessments.
One year
TMS-MEP:Amplitude and Waveform morphology
Time Frame: One year
Motor evoked potential (MEP) amplitude and waveform morphology will be assessed from transcranial magnetic stimulation-induced MEP recordings of lower-limb muscles, including the tibialis anterior, gastrocnemius, quadriceps femoris, and biceps femoris. MEP amplitude will be measured as the peak-to-peak amplitude, measured in microvolts (µV) or millivolts (mV), according to the study protocol. The presence, reproducibility, and morphology of the MEP waveform will also be evaluated. Measurements will be analyzed separately for each muscle and, where applicable, for each side. These parameters will be used to evaluate changes in corticospinal excitability and motor pathway function after spinal cord stimulation.
One year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Second Affiliated Hospital, School of Medicine, Zhejiang University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 24, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 31, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 4, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 4, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 31, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2025-1186

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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