What is a Selective Nerve Root Block?

A selective nerve root block is an injection that delivers anesthetic and/or steroid medication to a specific root site. Along the spine, there are several “holes” (foramina) through which nerve roots emerge. Bulging discs, bone spurs, misalignment of vertebrae and other spinal disorders can cause these holes to partially close. This can cause the nerve root to become pinched and create shooting and/or radiating pain. This treatment is used to determine the location of a specific spinal nerve root that may be the cause of a patient’s pain, as well as provide relief for the back and/or leg pain caused by the irritated spinal nerves.