A Transforaminal Epidural Steroid Injection (TFESI) is a specialized procedure used to relieve chronic pain caused by irritated spinal nerves. Unlike a standard epidural, which delivers medication into the general epidural space, a transforaminal approach targets the neural foramen—the small “exit window” where a specific nerve root leaves the spinal canal. By entering from the side of the spine, a physician can deliver a potent mixture of an anesthetic and a corticosteroid directly to the site of inflammation.

This procedure is most commonly used to treat conditions like herniated discs, spinal stenosis, or sciatica. Because the injection is highly localized, it often requires the use of fluoroscopy (live X-ray guidance) and contrast dye to ensure the needle is positioned safely and accurately. While a TFESI is not always a permanent cure, it can significantly reduce swelling and “fire” in the nerve, providing a window of relief that allows patients to progress with physical therapy and avoid more invasive surgical options.