The current "gold standard" for diagnosis of sacroiliac joint dysfunction emanating within the joint is sacroiliac joint injection confirmed under fluoroscopy or CT-guidance using a local anesthetic solution. The diagnosis is confirmed when the patient reports a significant change in relief from pain and the diagnostic injection is performed on 2 separate visits. Published studies have used at least a 75 percent change in relief of pain before a response is considered positive and the sacroiliac joint deemed the source of pain.    However, several other injection studies have compared intra-articular with extra-articular injection, and indicate that the ligament injection behind the joint is oftentimes superior to injection in the joint and seems to be a very underutilized diagnostic tool.  
Ketamine infusion therapy, while rarely performed, can be very effective in treating neuropathic pain which is resistant to other treatments. It is most commonly used for pain from RSD or CRPS (chronic regional pain syndrome). It is also used in fibromyalgia, phantom limb pain, and postherpetic neuralgia. In part, Ketamine infusion works on receptors in the central nervous system to reduce sensitivity to pain. Francis Corrigan, . has the experience to confidently provide this advanced pain management technique for the rare patient who does not respond to other treatments. Dr. Corrigan is currently the only Pain Management doctor providing this treatment in the Raleigh, Durham and Cary marketplace. He has successfully treated patients in Pinehurst for several years with this advanced treatment option.