You have a sciatic nerve on each side of your body. They are the longest and widest nerves in your body. They run from your lower spine through your hips and buttocks down to the backs of your knees. From there, the sciatic nerves branch out and extend down to your feet. When there is a problem with one of your sciatic nerves, pain can radiate throughout the length of it and travel all the way down to your foot. The pain that develops is referred to as sciatica.
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Honor Society of Nursing (STTI) answered
Mehmet Oz, MD, Cardiology (Cardiovascular Disease), answered
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The sciatic nerve is the largest nerve in the body, formed by nerve roots coming out of the spinal cord in the lower back. The nerve first goes down through the buttock. Then its branches extend down the back of the leg to the ankle and foot.
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