Study of Phantom Limb Pain Using Peripheral Nerve and Spinal Cord Stimulation

Inclusion Criteria: * Patients with implanted neuromodulation devices. * Amputation of the upper limb at the level of the forearm. * Age ranges from 18 to 65 years old. * The duration from the moment of amputation is from 6 months. * The presence of persistent chronic pain syndrome is from 4 to 10 points according to the Visual Analogue Scale * Absence of pregnancy at the time of implantation, confirmed by a pregnancy test. Exclusion Criteria: * The presence of severe somatic pathology * The presence of mental illness * The presence of a gross orthopedic deformity in the limb above the amputation level. * The presence of oncology. * The presence of epilepsy. * Complications after a traumatic brain injury or stroke. * Purulent - septic pathology. * Drug addiction. * Congenital malformation of the upper limb. * Any conditions that, according to the researcher, fall under the exclusion criteria.