Percutaneous Intradiscal Radiofrequency as A Treatment for Radicular Pain From Lumbar Disc Herniation

The goal of this clinical trial is to demonstrate the efficacy of percutaneous intradiscal radiofrequency as a treatment for radicular pain from lumbar disc herniation.The main question it aims to answer is:• Can percutaneous intradiscal radiofrequency lower the severity of radicular pain from lumbar disc herniation Participants will be treated with percutaneous intradiscal radiofrequency and evaluated for radicular pain severity before and 3 months after the procedure.There is no comparison group.

Inclusion Criteria:18-85 year-old patients with radicular pain from lumbar disc herniation for ≥ 3 monthsLumbar disc herniation ≤ 2 locations evidenced by MRI, with ≥ 50% remaining disc height, without disc sequestrationPreviously treated with epidural steroid injection (ESI) and achieved ≥ 50 % pain relief from local anesthetic effect, confirming radicular pain from lumbar disc herniation, but did not respond to ESI (< 50 % Pain relief or pain relief < 3 months)Exclusion Criteria:Patient refusalDiscitisPrevious lumbar spine surgeryProgressive neurological deficit and/or cauda equina syndromeCoagulopathyAllergic to any medication in study protocolsUnable to rate the painPain in any area worse than the radicular pain