Comedian Russell Brand is famous for his controversial comments and stunts, past struggles with addiction and his short-lived marriage to singer Katy Perry.
The sciatic nerve begins in the lower back, extends through the buttocks and goes down the length of the leg. It is the longest nerve in the body. The pain that occurs when this nerve becomes inflamed or compressed is called sciatica.
Sciatic Nerve Anatomy. The sciatic is a thick and complex nerve structure which is formed by the joining of the L4, L5, S1, S2 and S3 spinal nerve roots. The sciatic does not touch the spinal cord or cauda equina directly, but instead is formed by branches of exiting spinal nerves.