Sciatica happens due to a horde of reasons. It can occur due to Herniation of the Spinal Disc, Spinal Stenosis, Piriformis Syndrome, Sacroiliac Joint Dysfunction and even Pregnancy. If you are looking at a complete cure for sciatica and see your doctor about it, they may fix up a physiotherapy treatment for you. They may ask you to execute a series of drills. But tell me, has that ever cured sciatica completely?