What Causes Sciatica?
Your sciatic nerve branches from your spinal cord through your hips and buttocks and down the back of each leg. This nerve controls many of the muscles in your lower legs and provides feeling to your thighs, legs and feet. Sciatica may develop when a nerve root is compressed in your lower (lumbar) spine — often as a result of a herniated disk in your lower back.
Disks are pads of cartilage that separate the bones (vertebrae) in your spine. Filled with a gel-like substance, they keep your spine flexible and act as shock absorbers to cushion the vertebrae when you move.
If the outer covering of a disk tears (herniates), gel may seep out and press on a nerve root, causing pain in your back, leg or both. If the damaged disk is in the lower part of your back, you may also experience numbness, tingling or weakness in your buttock, leg or foot.
Although a herniated disk is a common cause of sciatic nerve pain, other conditions also can put pressure on your sciatic nerve, including: Read More→

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