Evaluation of the Efficacy of STNS With FAST and MULTIWAVE in Patients With Refractory Chronic Neuropathic Pain

Inclusion Criteria: * Subject has ≥ 18 years and ≤ 80 years * Subject has a global Visual Analogic Scale ≥ 5 * Subject has non-cancer pain with a significant neuropathic component for at least 6 months. * Subject has stable pain for at least 30 days * Pain medication(s) dosage(s) is/are stable for at least 30 days * Subject is eligible for Spinal Transforaminal NeuroStimulation after a pre-implantation assessment by a multidisciplinary team, as described by the French National Authority for Health (Haute Autorité de Santé) * Subject understands and accepts the constraints of the study and is able to use the equipment. * Patient is covered by French national health insurance. * Subject has given written consent to the study after having received clear and complete information. Non-inclusion Criteria: * Subject has a coagulation disorder * Subject is or has been treated with SCS, subcutaneous or peripheral nerve stimulation, an intrathecal drug delivery system * Subject has had corticosteroid therapy within the past 30 days * Subject has had radiofrequency therapy within the past 3 months * Subject has been diagnosed with cancer in the past 2 years * Subject has had a spinal surgery within the past 6 months * Simultaneous participation to any interventional study on health product or any study able to interfere with the current study endpoints. * Subject has at least one of brain MRI contraindications such as : intracranial clips /Vascular clips/Pace maker/Heart battery, Def…