Efficacy of an Intraoperative Periradicular Application of Platelet Rich Fibrin (PRF) on the Intensity of Residual Post-surgical Neuropathic Pain After a Surgery for Disc Herniation

Inclusion criteria: * Patient, male or female, \>18 years old at the time of signing informed consent; * Patient for whom a diagnosis of radiculopathy on lumbar disc herniation has been made, and for whom surgery has been scheduled in the Neurosurgery department; * Patient affiliated to a social security health insurance scheme; * Patient able to understand the objectives and risks of research and to give informed, dated and signed consent; * Patient having been informed of the results of the prior medical examination; * Women of childbearing age provided that a negative blood pregnancy test is recorded at the inclusion visit and effective contraception used throughout the study. Exclusion criteria: * Patient with a history of lumbar spinal surgery (multiple herniated discs, herniated disc other than lumbar); * Patient with HIV, active cancer, HBV, HCV (verified by interview); * Patient on long-term systemic corticosteroid therapy; * Patient with an ASA score \> 3 during the consultation with the anesthesiologist; * Inability to give the patient informed information (patient in an emergency or life-threatening situation, difficulties in understanding); * Patient in exclusion period (determined by a previous or ongoing study); * Subject under safeguard of justice; * Subject under curatorship; * Pregnancy; * Breastfeeding.