Inclusion Criteria:  Adult patients 18 years and older with a diagnosis of adult or degenerative scoliosis, Patients meeting criteria for surgical correction involving back and/or leg pain Fusion of 4+ levels, Competency to undergo informed consent process, Medical clearance for spinal fusion surgery,  Exclusion Criteria:  Patients with lumbar spine inaccessible for intrathecal Duragesic (fused L2-S1) Patients undergoing 3 or less levels of fusion Patients with neuromuscular disease Opioid intolerance or dependence Severe coexisting diseases ASA III