About this trial
The goal of this observational study is to learn about changes in brain and its activity of following radiofrequency denervation treatment for chronic low back pain. The main question it aims to answer are:
* report the magnitude of the brain changes following radiofrequency treatment for low back pain. * identify changes unique to radiofrequency treatment
Patients with nociceptive type low back pain of moderate to severe intensity will be identified to undergo radiofrequency treatment. They will have 3 MRI scans - Baseline, after the diagnostic injections and 3 months after radiofrequency treatment. They will also fill questions relating to their pain, disability and health related quality of life.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age 18 years or older
Chronic moderate to severe cLBP (defined by average pain intensity of ≥ 4 in the 11 point Numerical Pain rating scale and a minimum duration of 1 year)
Identified by clinical team as suitable for RFD pathway
Predominantly nociceptive pain (as defined by PainDetect score ≤12)
Disqualifiers
Any patient whose physical condition will preclude them from lying still for the duration of the brain scan.
Contraindication to magnetic resonance scanning such as an implantable cardiac device.
Women who are, or may be, pregnant. (Pregnant patients do not undergo pain procedures under radiological guidance as per routine clinical care)
Significant anxiety and depression (as defined by HADS score ≥ 9)
Trial population
Adult patients of either sex, who have been referred for consideration of RF denervation or already found suitable for RF denervation pathway will be eligible for the study. The eligible participant should have nociceptive type, moderate to severe low back pain arising from lumbar facet joints.
Trial design
Cohort
Prospective
Treatments tested in this trial
MRI scan
Other interventionParticipants will undergo brain MRI scan at 3 intervals
Treatment groups
Trial outcomes
Primary outcomes
resting state functional connectivity of default mode network
Any difference between baseline and after successful treatment will be reported as primary outcome measure.
Sponsors and contacts
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University of Aberdeen
Lead sponsor
NHS Grampian
Collaborator