What Is The Sciatic Nerve?

The sciatic nerve is the largest in the human body. It is formed through the fusion of five nerves in the lower spine. It passes through gluteal muscles deep in the buttock and down the back of the thigh to the heel of the foot. The sciatic nerve has a crucial vital function in connecting the brain and spinal cord with the muscles and skin of the entire leg and foot.


What Is Sciatica Nerve Pain?

Sciatica is a type of pinched nerve in the lumbar back. The pain people feel starts from one or more roots in the lumbar back and sacral spine.

Sciatic pain is any pain and neurological symptom that comes from the sciatic nerve. The symptoms of sciatica are typically felt anywhere along the leg.

What You Need to Know About Sciatica Symptoms.

If you are suffering from sciatica, this could be due to the nerve being irritated, inflamed, or compressed. Several issues withing the lower back can result in sciatica. Sciatica is a type of pinched nerve; this means that the pain originates from the lumbar and sacral nerve roots.

What Causes Sciatic Nerve Pain?

Any physical force that is placed on the nerve can result in symptoms. This is a result of the common conditions: 

  • Herniated discs. A disc in the lower back may herniate or bulge, irritating, and compression of the root.
  • Stenosis. Stenosis is the narrowing of the inter-vertebral opening through which the sciatic nerve roots travel. When you have stenosis, this may result in compression, which irritates it and results in pain. Additionally, degeneration of the inter-vertebral openings could result in changes in the spine, such as thickening of facet joint capsules and ligaments, may also directly compress the sciatic nerve.
  • Instability. Instability occurs when a vertebral segment when a vertebra slips over the one below it, vertebral defects, or complete dislocation of one or more vertebrae may directly compress the nerve root(s).

In rare occasions, tumors, cysts, infection, or abscesses in the lower spine or pelvic region may compress the root resulting in pain.