Condition that arises when pressure is applied to this nerve.
Sections. A pinched sciatic nerve – or the nerve that originates in the lower part of your spine and runs the length of your leg – is the condition that arises when pressure is applied to this nerve. The sciatic nerve is the longest and thickest nerve in your body, so sciatic symptoms can be severe and debilitating. 1 If the sciatic nerve is pinched and the pain in the leg is from the nerve (radicular pain), then this is a correct use of the term sciatica. 2  See Lumbar Radiculopathy. 3  If the pain is referred to the leg from a joint (referred pain), then using the term sciatica is technically incorrect. Sciatica refers to the pain and discomfort caused by pressure on the sciatic nerve or nerve roots. This nerve is the longest nerve in the body which runs from the lower back and pelvis, through the hip and buttock area, down to the back of each leg, and controls many of the muscles in these areas. Sciatica usually occurs when a nerve root in the lower spine is pinched or compressed. The most common cause for this is a herniated disk (slipped disk) in the lower back. This happens when the one of the disks that cushions the vertebrae slips out of place or ruptures and presses or puts pressure on a nerve. Sciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve. The sciatic nerve is formed by the nerve roots coming out of the spinal cord into the lower back. It goes down through the buttock, then its branches extend down the back of the leg to the ankle and foot. True sciatica is a condition that occurs when a herniated disc or osteoarthritic bone spurs compress and pinch one of the contributing roots of the sciatic nerve. This is known as a pinched nerve. This type of lower back pain is less common than other causes and conditions that produce back pain.
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what is a pinched sciatic nerve