A Post Market Study on Dorsal Root Ganglion (DRG) Stimulation in Failed Back Surgery Syndrome (FBSS)
SYMPATHY
A Post Market ObServational StudY on the Effect of DRG StiMulation in PATients witH Chronic Pain Following Surgical Lumbar DiscectomY (Failed Back Surgery Syndrome): SYMPATHY
1 other identifier
observational
22
1 country
1
Brief Summary
18-SMI-2013 is a post market, observational, questionnaire based study to assess the effectiveness of the commercially available Axium neurostimulator in the management of chronic pain following lumbar discectomy (Failed Back Surgery Syndrome)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Jan 2014
Typical duration for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 1, 2014
CompletedFirst Submitted
Initial submission to the registry
January 7, 2015
CompletedFirst Posted
Study publicly available on registry
January 9, 2015
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2017
CompletedStudy Completion
Last participant's last visit for all outcomes
January 1, 2017
CompletedResults Posted
Study results publicly available
March 26, 2018
CompletedOctober 16, 2019
October 1, 2019
3 years
January 7, 2015
August 28, 2017
October 4, 2019
Conditions
Outcome Measures
Primary Outcomes (2)
Change in Pain Intensity for Overall Pain From Pre-treatment Baseline
The Visual Analog Scale (VAS) is self-administered instrument assessing average pain intensity. Subjects rated their pain on a horizontal line, 10 cm in length, anchored by word descriptors on each end (no pain to worst imaginable pain). A higher score indicates a higher pain level. The values range from 0 (minimum pain) to 10 (maximum pain).
Baseline, 3, 6 and 12 Months
Percentage of Subjects With at Least 50% Pain Reduction
Percent of subjects with at least a 50% reduction. The Visual Analog Scale (VAS) is self-administered instrument assessing average pain intensity. Subjects rated their pain on a horizontal line, 10 cm in length, anchored by word descriptors on each end (no pain to worst imaginable pain). A higher score indicates a higher pain level. The values range from 0 (minimum) to 10 (maximum).
3, 6 and 12-Month Visits
Study Arms (1)
Treated Subjects
All subjects recruited and treated with the Axium neurostimulator
Interventions
Eligibility Criteria
Patients suffering from chronic pain post discectomy surgery
You may qualify if:
- Subject is at least 18 years old
- Subject is able and willing to comply with the follow-up schedule and protocol
- Chronic pain following surgical lumbar discectomy for at least 6 months
- Failed conservative treatments for chronic pain including but not limited to pharmacological therapy, physical therapy and interventional pain procedures for chronic pain
- Minimum baseline pain rating of 60 mm on the Visual Analog Scale in the subjects primary area of pain
- Subject is able to provide written informed consent
You may not qualify if:
- Female subject of childbearing potential is pregnant/nursing or plans to become pregnant during the course of the study
- Escalating or changing pain condition within the past month as evidenced by investigator examination
- Subject has had corticosteroid therapy at an intended site of stimulation within the past 30 days
- Subject has had radiofrequency treatment of an intended target Dorsal Root Ganglion within the past 3 months
- Subject currently has an active implantable device including implantable cardioverter defibrillator, pacemaker, spinal cord stimulator or intrathecal drug pump
- Subject is unable to operate the device
- Subjects with indwelling devices that may pose an increased risk of infection
- Subjects currently has an active infection
- Subject has participated in another clinical investigation within 30 days
- Subject has a coagulation disorder or uses anticoagulants that, in the opinion of the investigator, precludes participation
- Subject has been diagnosed with cancer in the past 2 years.
- Subject has an anatomical spinal abnormality which is anticipated to require further surgery
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
St Antonius Ziekenhuis
Nieuwegein, Netherlands
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Roni Diaz
- Organization
- St. Jude Medical
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- GT60
- Restrictive Agreement
- Yes
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 7, 2015
First Posted
January 9, 2015
Study Start
January 1, 2014
Primary Completion
January 1, 2017
Study Completion
January 1, 2017
Last Updated
October 16, 2019
Results First Posted
March 26, 2018
Record last verified: 2019-10