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CompletedNCT04073446FOCALUpdated Mar 29, 2023Results posted

Focal Pain Outcomes Using Configurations Applied for Lateral Stimulation

An interventional study of Spinal Cord Stimulation in Chronic Pain, sponsored by Boston Scientific Corporation. Completed at 1 site in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-03-29.

Sponsored by Boston Scientific Corporation · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
3
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

To evaluate programming modalities at various targets for focal foot, knee pain, and groin pain relief.

02

Conditions studied

  • Chronic Pain

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Keywords

  • Spinal Cord Stimulation
  • Chronic Pain
03

In context

Chronic Pain

2,930 studies on the registry are indexed under Chronic Pain; 701 are open to participants now.

This study's enrollment of 3 is below the median of 60 across 2,161 interventional studies indexed under Chronic Pain.

Browse Chronic Pain studies →

Lead sponsor

Boston Scientific Corporation is the lead sponsor of 517 studies on the registry; 38 are open to participants now.

Of its 64 completed or terminated interventional studies of FDA-regulated products, 56 (88%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • Average unilateral foot, or knee or groin pain intensity of 6 or greater on a 0-10 numerical rating scale at Baseline Visit based on 7-day average NRS score
  • Subject signed a valid, EC-approved informed consent form (ICF)
  • Willing and able to comply with all protocol-required procedures and assessments/evaluations
  • 18 years of age or older when written informed consent is obtained

Key Exclusion Criteria:

  • Significant cognitive impairment at Screening that, in the opinion of the Investigator, would reasonably be expected to impair the study candidates to participate in the study
  • Participating (or intends to participate) in another drug or device clinical trial that may influence the data that will be collected for this study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
3 participants (actual)

Study arms

  • Active comparator
    Dorsal Column (DC) Perception

    Use of DC Perception based programming

    Device: Spinal Cord Stimulation

  • Active comparator
    Dorsal Root (DR) Perception

    Use of DR Perception based programming

    Device: Spinal Cord Stimulation

  • Active comparator
    Dorsal Root (DR) Sub-perception

    Use of DR sub-perception based programming

    Device: Spinal Cord Stimulation

  • Active comparator
    Dorsal Column (DC) Sub-perception

    Use of DC sub-perception based programming

    Device: Spinal Cord Stimulation

Interventions

  • DeviceSpinal Cord Stimulation

    Patients eligible for SCS

06

What researchers measure

Primary outcomes

  1. Change in Pain Intensity

    Change in pain intensity from Baseline to end of each Period (knee/foot). Pain scores are measured on a scale of 0 - 10 where 0 is no pain and 10 is maximum pain possible.

    Time frame: up to 6 weeks

07

Results

Posted Mar 29, 2023

Participant flow

3 subjects were enrolled. However 2 were implanted and proceeded to crossover phase

Participant flow — Overall Study
MilestoneSubjects Received All Interventions (4 Programs)
Started2
Dc perception2
Dr perception2
Dr subperception2
Dc subperception1
Completed1
Not completed1

Outcome measures

PrimaryChange in Pain Intensity

Change in pain intensity from Baseline to end of each Period (knee/foot). Pain scores are measured on a scale of 0 - 10 where 0 is no pain and 10 is maximum pain possible.

Time frame:
up to 6 weeks
Reported as:
Mean · units on a scale
Change in Pain Intensity
units on a scaleDorsal Column (DC) PerceptionDorsal Root (DR) PerceptionDorsal Root (DR) Sub-perceptionDorsal Column (DC) Sub-perception
Change in Pain Intensity5 (4 to 6)4.5 (2 to 7)4.5 (2 to 7)1 (1 to 1)

Adverse events

Collected over Adverse events were collected and reported up to end of crossover phase (approximately 18 weeks). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Dorsal Column (DC) Perception0/2 (0%)0/2 (0%)0/2 (0%)
Dorsal Root (DR) Perception0/2 (0%)0/2 (0%)1/2 (50%)
Dorsal Column (DC) Sub-perception0/1 (0%)0/1 (0%)1/1 (100%)
Dorsal Root (DR) Sub-perception0/2 (0%)1/2 (50%)0/2 (0%)
Most frequent serious events
Most frequent serious events
EventDorsal Column (DC) PerceptionDorsal Root (DR) PerceptionDorsal Column (DC) Sub-perceptionDorsal Root (DR) Sub-perception
Shoulder PainMusculoskeletal and connective tissue disorders0/20/20/11/2
Most frequent other events
Most frequent other events
EventDorsal Column (DC) PerceptionDorsal Root (DR) PerceptionDorsal Column (DC) Sub-perceptionDorsal Root (DR) Sub-perception
FasciculationMusculoskeletal and connective tissue disorders0/20/21/10/2
No bowel movementsGastrointestinal disorders0/21/20/10/2

Baseline characteristics

Age, Continuous
Age, Continuous(years)Subjects Received 4 Interventions (4 Programs)
Mean59 (47 to 71)
Sex: Female, Male
Sex: Female, Male(Participants)Subjects Received 4 Interventions (4 Programs)
Female2
Male0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Subjects Received 4 Interventions (4 Programs)
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White2
More than one race0
Unknown or Not Reported0
08

Study locations

1 site
  • AZ Nikolaas
    Sint-Niklaas, Belgium
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Feb 24, 2021

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 29, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04073446
Lead sponsor
Boston Scientific Corporation
Responsible party
Sponsor
First posted
Aug 29, 2019
Start date
Oct 31, 2019
Primary completion
Oct 1, 2021
Completion
Oct 1, 2021
Results posted
Mar 29, 2023
Last update
Mar 29, 2023

Study contacts

Roshini Jain
study director · Boston Scientific Corporation

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2022. You cannot join it, but the record below documents what was studied.

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