Sciatica is a symptom of a problem with the sciatic nerve causing pain, weakness, numbness, or tingling. Read about causes, tests, and treatment.| medlineplus.gov
Piriformis syndrome is pain and numbness in your buttocks and down the back of your leg. It occurs when the piriformis muscle in the buttocks presses on the sciatic nerve.| medlineplus.gov
You were in the hospital for spine surgery. You probably had a problem with one or more disks or spine bones. A disk is a cushion that separates the bones in your spine (vertebrae).| medlineplus.gov