Trial of Disc Biacuplasty to Treat Chronic Discogenic Low Back Pain

Inclusion Criteria: * Age \>18 years * Able to understand the informed consent and baseline/follow-up questionnaires * Chronic low back pain \> leg pain for longer than 6 months, unresponsive to comprehensive non-operative treatment * No clinical evidence of SI joint mediated pain * Concordant pain reproduced on provocative discography at an intensity of \>6/10 at low pressure (\<50 psi) at not more than 2 discs and a negative response at an adjacent control disc * Preservation of at least 50% height of the symptomatic disc(s) Exclusion Criteria: * Active radicular pain * Nucleus pulposus herniation \> 5 mm, extrusion or sequestration on MRI * Spondylolithesis at the symptomatic level * Prior surgery at the symptomatic level * Concomitant cervical or thoracic pain \>2/10 (VAS) in severity * Other chronic pain conditions (i.e. Fibromyalgia Syndrome) * Immunosuppression (i.e. Cancer, AIDS, Rheumatoid arthritis) * Third-party (WSIB, litigation or insurance) involvement * Psychological issues impeding recovery by history, examination and/or a Beck Depression Inventory score of \>20 * Systemic or localized infection (at the anticipated needle entry sites) * BMI \> 35 (Obesity) * Substance or opioid abuse * Coagulopathy