Sciatica is name given to the pains in the sciatic nerve that span from the lower back, through the hips and buttocks, and all the way down to every leg.

Any type of damage to the places where the nerve goes through can result in nerve pinching and this type of pain. Lumbar pains spread through the length of your upper leg, calves, knees, and/or the feet.

Source: How To Release The Pinched Nerve In Your Lumbar Area (SCIATICA): 2 Simple Ways Of Getting Rid Of The Pain. | Life is Simple.