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.
A laparoscopic cholecystectomy is a surgical procedure during which the doctor removes your gallbladder. This procedure uses several small incisions (cuts) instead of one large one.A laparoscope, a narrow tube with a camera, is inserted through one incision. cholecystectomy is the removal of your gallbladder through an incision in the upper abdomen. An open cholecystectomy might be required instead of a laparoscopic cholecystectomy because of: 1  Major scarring from a previous surgery.