Erector Spinae Plane Block for Chronic Pain After Spinal Surgery

The aim of this study is to evaluate whether the erector spinae plane (ESP) block reduces acute and chronic postoperative pain in patients undergoing spinal surgery. Participants will be assigned to study groups according to the study protocol. Postoperative pain will be evaluated using standardized pain assessment tools. Acute postoperative pain will be assessed using the Numeric Rating Scale (NRS), while chronic pain and its impact on daily life will be evaluated using the Brief Pain Inventory (BPI). Neuropathic pain symptoms will also be assessed using the Self-Administered Leeds Assessment of Neuropathic Symptoms and Signs (S-LANSS). The study aims to determine whether the use of ESP block as part of perioperative pain management can improve postoperative pain outcomes following spinal surgery.

Inclusion Criteria: 1. Undergoing elective lumbar spinal surgery 2. ASA I-III 3. Aged 18-75 years Exclusion Criteria: Refusal to participate at the time of enrollment Request to withdraw from the study Inability to provide informed consent Emergency surgery Bleeding diathesis Presence of contraindications to the local anesthetic agents used in the study Chronic opioid use Psychiatric disorders Infection at the injection site