Selective Nerve Root Block

Selective nerve root blocks are similar to ESI, however, they are more effective for disc herniations. This procedure is done on an outpatient basis using fluoroscopy (X-ray guidance). During the procedure, the needle is positioned near the nerve as it exits the spinal column (Fig. 2). The injection gives temporary relief while the disc is healing. About 87% of patients experience relief for up to 3 months with this type of injection. Patients are more likely to experience numbness or slight temporary weakness after this type of injection.