Sciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve.The sciatic nerve is formed by the nerve roots coming out of the spinal cord into the lower back. It goes down through the buttock, then its branches extend down the back of the leg to the ankle and foot.ciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve.
prefrontal lobotomy - surgical interruption of nerve tracts to and from the frontal lobe of the brain; often results in marked cognitive and personality changes. frontal lobotomy, leucotomy, leukotomy, lobotomy, prefrontal leucotomy, prefrontal leukotomy.
It is a procedure whereby part of the frontal lobe of the brain is sliced off. Phineas P. Gage, a 19th century railroad worker, suffered an accidental left frontal lobotomy when a spike with which he was tamping dynamite was blown backward through his skull.ating Newest Oldest. Best Answer: It is a procedure which severes the frontal lobe of the brain and gives the patient an emotional flatenning and pretty much makes the patient a functional schizoid. It is, thankfully, looked upon now as one of the most barbaric practices of modern medicine.