[Oerations on peripheral nerves, plexus and nerve roots, including subarachnoid block with phenol in chronic pain (author's transl)].

Peripheral surgery was performed in 112 patients. Neurolysis or resection of neurons gave rather poor results in pain after nerve injury and stump pain. Rhizotomy is considered to be more effective in those cases. Rhizotomy is also successful in radicular, especially coccygeal, pain syndromes. Subarachnoid blocks with Phenol gave similar promising results. Causalgia responds well in a high percentage of cases to sympathectomy; cases of postherpetic neuralgia phantom pain and tabetic crises generally do not respond to peripheral surgery.