The Effect of Central Sensitization in Radicular Pain in Patients With Failed Low Back Surgery Syndrome

Inclusion criteria: * 18-75 years old * Meeting the diagnostic criteria for failed back surgery syndrome * Radicular pain that begins any time after surgery and lasts for at least 6 months * Epidural fibrosis and/or disc herniation at the L5 and/or S1 vertebral level on contrast-enhanced MR imaging * Nrs equal to or greater than 4 * Conservative methods are ineffective * Volunteer Exclusion Criteria: * Acute or chronic uncontrolled medical illness * Lumbar localization pathologies * Isolated axial low back pain * History of lumbar stabilization or non-microdiscectomy lumbar surgery * History of adverse statements against local anesthesia or steroids being pregnant or breastfeeding * Stories on the injectables to be administered bleeding diet * Not wanting to participate in the research