 Following permanent device implant, the IPG will be activated and thus, stimulation delivered on an ongoing basis for 12 months. At 1 month and 9 months following Post-Permanent Device Activation, assessments of pain and adverse events will be made. At 3, 6, and 12 months Post-Permanent Device Activation, subjects will be assessed for pain and adverse events as well as disability, functioning, medication use, quality of life, depression and sleep. Patient Global Impression of Change, Clinician Global Impression of Change and subject satisfaction will be recorded at 3 and 12 months Post-Permanent Device Activation. 