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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05372822
Other study ID # 2018/475-b
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date May 1, 2021
Est. completion date August 15, 2025

Study information

Verified date June 2024
Source St. Olavs Hospital
Contact Sasha Gulati, md prof
Phone +47 73592020
Email sasha.gulati@ntnu.no
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Spinal cord stimulation (SCS) is a widely applied therapy to treat chronic neuropathic pain, and one of the most common indications is persisting radicular neuropathic pain following lumbar spine surgery. In traditional SCS therapies, the objective has been to replace the pain sensation with paresthesia. The anticipation is that the electrical current alters pain processing by masking the sensation of pain with a comfortable tingling or paresthesia. Although patients mostly cope with paresthesia, a significant proportion reports that the sensation is unpleasant. 'Burst' SCS utilizes complex programming to deliver high-frequency stimuli. This SCS technique seems to provide paresthesia-free stimulation, resulting in better pain relief of low back and leg pain then traditional tonic stimulation. The widespread use of SCS has not been backed by solid evidence. The absence of placebo-controlled trials has long been an important point of criticism, but due to the nature of the intervention with sensation of paresthesia, studies with placebo control have so far not been considered possible. When 'burst' SCS is used the stimulation is often unnoticed by the patient, allowing comparison with placebo stimulation. The aim of this randomized double-blind sham-controlled crossover trial is to evaluate the efficacy of 'burst' spinal cord stimulation for chronic radicular pain following spine surgery.


Recruitment information / eligibility

Status Recruiting
Enrollment 50
Est. completion date August 15, 2025
Est. primary completion date August 15, 2025
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Have undergone =1 back surgeries and developed chronic radicular pain that has remained refractory to non-surgical treatment for =6 months - Minimum pain intensity of 5/10 on the leg pain NRS at baseline - Successful two-week SCS testing period with tonic stimulation (=2 points reduction in leg pain NRS from baseline). This means patients will experience paresthesia during the SCS trial period - Mandatory assessment at the Multidisciplinary outpatient clinic for back-, neck- and shoulder rehabilitation, St. Olavs University Hospital Exclusion Criteria: - Coexisting conditions that would increase procedural risk (e.g., sepsis, coagulopathy) - History of laminectomy or posterior fusion at the thoracolumbar junction, where percutaneous electrode end tips are routinely placed. - Abnormal pain behavior and/or unresolved psychiatric illness. - Unresolved issues of secondary gain or inappropriate medication use.

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Burst Spinal Cord Stimulation
Burst stimulation utilizes complex programming to deliver high-frequency stimuli of a 40 Hz burst mode with 5 spikes at 500 Hz per spike delivered in a constant current mode
Sham spinal cord stimulation
No spinal cord stimulation is provided
Device:
SCS implant
a subcutaneously implantable pulse generator ("pacemaker") for long-term therapy. The following system from Abbott will be implanted: ProclaimTM XR implantable pulse generator and Octrode® 8-contact lead

Locations

Country Name City State
Norway St Olavs Hospital Trondheim

Sponsors (2)

Lead Sponsor Collaborator
St. Olavs Hospital Norwegian University of Science and Technology

Country where clinical trial is conducted

Norway, 

Outcome

Type Measure Description Time frame Safety issue
Primary change in disease-specific functional outcome from baseline measured with version 2.0 of the Oswestry disability index (ODI) that has been translated into Norwegian and tested for psychometric properties. The ODI questionnaire quantifies disability for degenerative conditions of the lumbar spine and covers intensity of pain, ability to lift, ability to care for oneself, ability to walk, ability to sit, sexual function, ability to stand, social life, sleep quality, and ability to travel. The index is scored from 0 to 100. Zero means no disability and 100 reflects maximum disability. 12 months
Secondary Change in generic health-related quality of life measured with the Euro-Qol-5D (5L) 12 months
Secondary Change in back pain measured using numerical rating scales (NRS) 12 months
Secondary change in leg pain measured using numerical rating scales (NRS) 12 months
Secondary Daily physical activity measured by use of a body-worn accelerometer (activPALs from PAL Technologies Ltd., Glasgow, United Kingdom) attached by a waterproof tape to the midpoint of the patients' anterior right thigh 12 months
Secondary Health Care Provider's Costs Cost-effectiveness (cost per gained quality-adjusted life year) 12 months
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