The hypogastric plexus is a bundle of nerves found at the bottom of your spine that control pain signals sent from your pelvic region to the brain. In many cases involving pain in or radiating from the pelvis, inflammation of the hypogastric plexus may be to blame.
To perform the block, your physician will numb areas on your back with a local anesthetic. Then, needles will be inserted into either side of your spine, which administer a steroid to bathe and numb the nerve bundle.
Many patients begin to feel the effects soon after, with the full effects coming a few days later. The length of time the pain relief lingers varies from patient to patient, but a block can be performed once every several months in order to continue the relief.