- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02494323
Evaluation of Dual Channel vs. Single Channel FES for Dropfoot
The Evaluation of Dual Channel vs Single Channel FES for Dropfoot
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Twenty subjects will be stimulated with a single channel electrode, the Quick Fit Electrode. The values of stimulation will be recorded, as well as ankle movement (balanced Dorsiflexion, inverted or everted Dorsiflexion). Subjects will fill up a Benefit, Satisfaction, Willingness to continue (BSW) form. Next, subjects will be fitted with a segmented Electrode that enables both single and dual channel. Four configurations of current will be compared during sitting position and during gait. The first configuration (A) is segmented electrode single channel stimulation, the second configuration (B) is two currents running in parallel. The first medial channel stimulates the deep branch of common peroneal nerve (dorsiflexion/inversion) and the second lateral current stimulates the superficial peroneal nerve (eversion). In the third configuration (C), channels run diagonally. The medial channel runs between the upper medial electrode and the lateral lower electrode (dorsiflexion/inversion). The lateral channel runs between the lateral upper electrode and the medial lower electrode (eversion). The forth configuration (D) includes a common lower electrode; when it is connected to the upper medial electrode it functions as a medial channel (dorsiflexion/inversion); when it is connected to the upper lateral electrode, it functions as the lateral channel (dorsiflexion/eversion). The subjects will be asked to answer 3 questions after trying each configuration. 1. Thinking of the current system you use, did this test system provide any difference in the way the stimulation feels compared to your existing system? Yes No/Cannot tell any difference. 2. Thinking of the current system you use, did this test system provide any difference in what you think of as the 'quality' of stimulation you are used to compared to your existing system? Yes No/Cannot tell any difference. 3. Thinking of the current system you use, did this test system provide any difference in your ability to walk compared to your existing system? Yes No/Cannot tell any difference After all three dual channel configurations have been tested, subjects will be asked Question 4: Thinking of the last three test systems you used today, which test system do you believe was best among the three? B, C or D Subjects will be asked to grade their satisfaction with the one dual channel system they believe is best using the Benefit, Satisfaction, Willingness to Continue (BSW) questionnaire.
After completing evaluation of the first twenty subjects, a re-evaluation of ten subjects will take place. The anode/cathode electrodes will be re-positioned so the cathodes will be located at the upper part of the cuff and the anodes will be located at the lower part of the cuff. This re-evaluation is needed, since in the first evaluation there was an inconsistency in the anode/cathode positioning in the right and left FES cuffs. Stimulation will be given while sitting and during 2 minutes walk. Ankle movement and stimulation intensity will be recorded and compared to the input received in the initial evaluation of the ten subjects.
Fifty additional subjects were recruited to evaluate the performence of the common anode configuration (configuration D) and compare it to the QFE. configuration D was chosen because it showed an advantage over the other dual channel configurations. Same procedure will take place in order to compare the performance of the Segmented Electrode (configuration D) and the QFE. In addition, ambulation tests will be performed: 2mwt and 10 meter walk test. Gait velocity achieved when using each electrode will be compared to each other and also compared to gait velocity achieved when walking with no stimulation.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Hod HAsharon, Israel
- Bioness Neuromodulations
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:• Experienced user or a new user of Functional Electrical Stimulation devices
- Upper motor neuron lesion.
- Foot drop - toe drag during walking.
- Lower limb spasticity- 0-4 according to the modified Ashworth scale.
- Responsible mental state, able to follow multiple step directions.
- Aged between 18 and 80 years old.
- Available for participating in the study.
- Able to understand and sign the informed consent form.
- Able to walk independently or with an assistance device (e.g. cane, walker etc.) / spot guarding for at least 10 meters.
- Ankle passive range of motion preserved between 10 degrees plantarflexion and 30 degrees dorsiflexion.
Exclusion Criteria:
• Subjects with a demand-type cardiac pacemaker, defibrillator or any electrical or metallic implant.
- Cancerous lesion of lower limb, present or suspected.
- Medical condition that prevents participation or would likely lead to inability to comply with the protocol [e.g.: congestive heart failure, patient receiving chemotherapy, uncontrolled epilepsy, etc.].
- Skin lesion at the site of the stimulation electrodes.
- Change in bone-joint structures of the lower limb, such as contractures or deformations; fracture or dislocation, which would be adversely affected by motion from the stimulation.
- Pregnancy.
- Diagnosis of major depression or psychotic disorder.
- Participation in another investigation that may directly or indirectly affect the study results.
- Unable to tolerate electrical stimulation.
Study Plan
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 |
Intervention / Treatment |
---|---|
Experimental: Functional Electrical Stimulation
Dual channel stimulation of the peroneal nerve to improve dropfoot
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Single channel and dual channel FES for balanced dorsiflexion for patients with dropfoot
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Ankle Movement as Good as or Better With the Segmented Electrode as With the QFE
Time Frame: 7 months
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Subjects were fitted with the L300 Cuff that houses the single channel QFE and then the modified cuff that houses the dual channel segmented electrode.
Subjects were stimulated first sitting and then after optimal ankle elevation was achieved, they walked with the stimulation.
The clinician documented ankle movement on a 5 point scale: 1-inverted dorsiflexion, 2-slightly inverted dorsiflexion, 3-neutral dorsiflexion,4- slightly everted dorsiflexion, 5- everted dorsiflexion.
The clinician documented the number of subjects who achieved each movement with each electrode according to the 5 point scale.
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7 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Benefit Satisfaction Willingness to Continue (BSW) Questionnaire
Time Frame: 7 months
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Number of subjects who benefited or not benefited from the dual channel electrode was counted, number of patients who were satisfied or not satisfied with the dual channel electrode was counted, number of subjects who were willing to continue or who were unwilling to continue with the dual channel electrode was counted
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7 months
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Director: Bella Kuchuk, R&D Clinician
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- Segmented Electrodes
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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