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.
Anatomy of Sciatica. The sciatic nerve runs from the lower back, down through the hips and buttocks, and along the back of the leg into the foot. It actually originates from the L4 through S3 spinal nerves. It innervates the deep muscles of the buttocks and hips.ciatica is a name given to pain caused by pressure placed on the sciatic nerve. When a nerve is placed under pressure it sends out pain signals. It may radiate down the length of the nerve or be focused in a specific area. The muscles innervated by the nerve may or may not be directly affected.