DropfootNCT02494323
Evaluation of Dual Channel vs. Single Channel FES for Dropfoot
A study testing Functional Electrical Stimulation in people with Dropfoot, run by Bioness Neuromodulation at 1 site in Israel.
Trial summary
Seventy (70) subjects put on the Ness L300 System, a FES device for ankle dorsiflexion for patients with foot drop. Stimulation will be given through two different electrodes: the QFE which is a single channel stimulation, and the Segmented Electrode which is a dual channel electrode. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Dropfoot
- What is being tested?
- Functional Electrical Stimulation
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 70 participants
- Where
- 1 siteIsrael
- Study dates
- Mar 2015to Jan 2016
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
None listed.
Who cannot join
- • 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.
Show all 9Show fewer
- 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.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Evaluation of Dual Channel vs Single Channel FES for Dropfoot
Seventy (70) subjects put on the Ness L300 System, a FES device for ankle dorsiflexion for patients with foot drop. Stimulation will be given through two different electrodes: the QFE which is a single channel stimulation, and the Segmented Electrode which is a dual channel electrode. The purpose of the dual channel stimulation is to enable a balanced dorsiflexion, with no inversion/eversion inclinations. Ankle elevation will be recorded both in a seated position and during gait. Subject preference will be recorded through BSW Questionnaire and Subjective Survey. Twenty first subjects will be stimulated with four different dual channel configurations. The configuration that shows to have an advantage over the others will continue to be evaluated on fifty additional subjects. Same procedure will be taken place, in addition ambulation tests will be performed.
Read the 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.
- Conditions
- Dropfoot
- Being tested
- Functional Electrical Stimulation
- Keywords
- Dual Channel Functional Electrical Stimulation, dropfoot, balanced dorsiflexion
- Medical subject headings
- Peroneal Neuropathies
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Functional Electrical StimulationDevice
Also called Segmented Electrode, Novus System
Single channel and dual channel FES for balanced dorsiflexion for patients with dropfoot
| Study group | Role | What they receive |
|---|---|---|
| Functional Electrical Stimulation | Experimental | Dual channel stimulation of the peroneal nerve to improve dropfoot Receives: Device: Functional Electrical Stimulation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Ankle Movement as Good as or Better With the Segmented Electrode as With the QFE
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.
Measured: 7 months
Secondary outcomes (1)
Benefit Satisfaction Willingness to Continue (BSW) Questionnaire
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
Measured: 7 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Jul 2015 (estimated)
- Study startMar 2015
- Primary completionJun 2015
- Study completionJan 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for DropfootStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 70 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bioness Neuromodulation
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Loewenstein Hospital
- Responsible party
- Sponsor
- Investigators
- Bella Kuchuk, Study director, R&D Clinician
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02494323
- Sponsor's protocol ID
- Segmented Electrodes
- Status last verified
- Feb 2015
- First submitted
- 23 Mar 2015
- Last updated
- 3 Aug 2016
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 Aug 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Evaluation of Dual Channel vs Single Channel FES for Dropfoot
- ClinicalTrials.gov ID
- NCT02494323
- Acronym / sponsor ID
- Segmented Electrodes
- Conditions
- Dropfoot
- Keywords
- Dual Channel Functional Electrical Stimulation, dropfoot, balanced dorsiflexion
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 70 participants (actual)
- Lead sponsor
- Bioness NeuromodulationIndustry (pharma, biotech, devices)
- Collaborators
- Loewenstein Hospital
- Study start
- Mar 2015
- Primary completion
- Jun 2015 (actual)
- Study completion
- Jan 2016 (actual)
- First posted
- 10 Jul 2015 (estimated)
- Results
- Posted 1 Apr 2016
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Seventy (70) subjects put on the Ness L300 System, a FES device for ankle dorsiflexion for patients with foot drop. Stimulation will be given through two different electrodes: the QFE which is a single channel stimulation, and the Segmented Electrode which is a dual channel electrode. The purpose of the dual channel stimulation is to enable a balanced dorsiflexion, with no inversion/eversion inclinations. Ankle elevation will be recorded both in a seated position and during gait. Subject preference will be recorded through BSW Questionnaire and Subjective Survey. Twenty first subjects will be stimulated with four different dual channel configurations. The configuration that shows to have an advantage over the others will continue to be evaluated on fifty additional subjects. Same procedure will be taken place, in addition ambulation tests will be performed.
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 design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Functional Electrical Stimulation | Experimental | Device: Functional Electrical StimulationDual channel stimulation of the peroneal nerve to improve dropfoot |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (0 listed)
Key exclusion criteria (9 listed)
- • Subjects with a demand-type cardiac pacemaker, defibrillator or any electrical or metallic implant.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Functional Electrical StimulationAlso: Segmented Electrode, Novus SystemSingle channel and dual channel FES for balanced dorsiflexion for patients with dropfoot | Device | Functional Electrical Stimulation |
Primary outcome
Ankle Movement as Good as or Better With the Segmented Electrode as With the QFE
Time frame: 7 months
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.
1 secondary outcome
Benefit Satisfaction Willingness to Continue (BSW) Questionnaire
Time frame: 7 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Aug 2016.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Bella Kuchuk study director
R&D Clinician
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Functional Electrical Stimulation in people with Dropfoot, run by Bioness Neuromodulation at 1 site in Israel.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 0 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 Aug 2016. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Israel. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 1 Apr 2016). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Ankle Movement as Good as or Better With the Segmented Electrode as With the QFE (time frame: 7 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Aug 2016.