Caudal extradural injection for the treatment of low back pain.

The technique of large volume caudal extradural injection of a solution containing bupivacaine hydrochloride, hydrocortisone acetate and methylprednisolone acetate for low back pain is described. The results of 500 such injections are reviewed. The technique provides a rapid safe method for the treatment of low back pain. Pain was relieved in over half the patients treated by a single injection.