Epidural Steroid Injection
The epidural space is between the dural sac (a membrane encasing the spinal cord, spinal fluid and nerve roots) and the vertebral wall. An epidural steroid injection (ESI) is an injection that delivers long-acting steroids directly into the epidural space. The steroids help to reduce pain by reducing inflammation around the nerves. Sometimes an anesthetic or saline is also used to help “flush out” inflammatory agents that may be irritating a nerve.
Epidural steroid injection is being used for over 40 years as a treatment for neck, lower back and radiating leg pain with minimal risk factors. It is a combination of corticosteroid with a local anesthetic pain relief medicine that soothes irritated and inflamed spinal nerves.
Epidural steroid injection (ESI) is a non-surgical procedure in which anti-inflammatory medicines (steroid) and numbing medicine (anesthetic) is injected into the epidural space which surrounds the spinal cord and inflamed nerve roots. Corticosteroids are powerful anti-inflammatory medicines that reduce swelling and inflammation while local anesthetic provides instant pain relief.