A selective nerve root block injection can be used to diagnose and pinpoint the source of the pain from pinched nerve.
During this procedure, you will lie on your stomach. The injection area will be numbed by a local anesthetic. After the area is sterilized, a contrast dye is injected into your body to guide the doctor during the procedure. When the procedure is done, a sterile bandage will be applied to the injection site.
This procedure involves very few risks, but you may have some side effects, including a spinal headache and bleeding. There is a low risk for an allergic reaction or infection.