Trial Assessing Cooled Radiofrequency Denervation as a Treatment for Sacroiliac Joint Pain Using the Sinergy System

Inclusion Criteria: * Predominantly axial pain below L5 vertebrae * greater than 75%pain relief from 2 seperate lateral branch blocks done on different days * chronic axial pain lasting longer than 6 months, 3 day average VAS between 4 and 8 * age greater than 18 * failed to acheive adequate improvemnet with comprehensive non-operative treatments, includingbut not limited to: activity alteration, non0steriodal anti-iflammatory, physical and/or manual therap, and flurpscopically guided steriod injections in and around the area of pathology * all other possible sources oflow back pain have been ruled out, including but not limited to the intervertebral discs, bone fracture. Exclusion Criteria: * Beck Depression greater than 20% * irreversible psychological barriers to recovery * spinal pathology that may impede recovery such as spins bifida occulta, * moderate to severe foraminal or central canal stenosis * systemic infection or localized infection at inducer site * concomitant cervical or thoracic pain greater than 2/10 on VAS * uncontrolled or acute disease * chronic severe condition such as rheumatoid arthritis * preganancy * active radicular pain * immunosuppression * workers compensation * allergy to injectants or medications used in procedure * high narcotis use greater than 30 mg hydrocodone or equivalent * smokers * body mass index greater than 29.9