Transforaminal Epidural Steroid Injection
The transforaminal approach is used to target a specific nerve root and is performed on only one side at a time. Between the vertebrae are foraminae, or small openings from which the nerve roots exit the spine. By using the transforaminal approach, the doctor can determine if a particular nerve root is the source of the problem. The needle is inserted to the side of the vertebra just above the opening for the nerve root and outside the epidural space.