What Causes Sciatica?
ciatica is 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. While this is the most common cause of Sciatica, other less common conditions can also result in pressure on the spinal nerves such as:
Spinal stenosis a condition that causes a narrowing of the canal that holds the spinal cord and many nerve roots. This may cause pressure on the sciatic nerve.
Spondylolisthesis a condition where one vertebra slips forward over another vertebra causing pressure on the sciatic nerve. This condition is often a result of degenerative disk disease.
Piriformis syndrome this occurs when the sciatic nerve becomes trapped by the piriformis muscle in the upper thigh. When the muscle becomes tense or goes into spasm it puts pressure on the sciatic nerve.
Spinal tumors Tumors in the spinal cord can cause pressure on the sciatica nerve or the nerve roots as they grow.
Trauma or injury A bad fall or a car accident can cause damage to the sciatica nerve or the nerve roots or cause swelling that puts pressure on the nerve.
Osteoarthritis, osteoporosis or the general wear and tear of aging may cause sciatica.
Tags: Sciatica, Sciatica causes
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