Nerve roots are branches from every level of the spinal cord, which carry signals throughout the body from the skin to the muscles. Irritation of a nerve root may result in pain, numbness, tingling and sometimes weakness down an arm or a leg.

How it's performed
Using a local anesthetic, the region around the effected nerve root is isolated using a fluoroscopic X-ray picture and injected with an anti-inflammatory medication. The procedure takes 20-30 minutes.