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.
1 Sciatic nerve â The sciatic nerve is the largest single nerve in the body, extending from the back of the pelvis down the back of the thigh. 2  It is the primary nerve of the leg and is responsible for innervating the muscles in the hip and lower limbs (including the tibial nerve and common fibular nerve).