Comparison of Senza to Commercial Spinal Cord Stimulation for the Treatment of Chronic Pain

Inclusion Criteria: * Have been diagnosed with chronic, intractable pain of the trunk and/or limbs (VAS ≥ 5) which has been refractory to conservative therapy for a minimum of 3 months. * Be an appropriate candidate for the surgical procedures required in this study based on the clinical judgment of the implanting physician * Be 18 years of age or older at the time of enrollment * Be willing and capable of giving informed consent * Be willing and able to comply with study-related requirements, procedures, and visits Exclusion Criteria: * Have a medical condition or pain in other area(s), not intended to be treated with SCS, that could interfere with study procedures, accurate pain reporting, and/or confound evaluation of study endpoints, as determined by the Investigator * Have evidence of an active disruptive psychological or psychiatric disorder or other known condition significant enough to impact perception of pain, compliance of intervention and/or ability to evaluate treatment outcome, as determined by a psychologist * Have a current diagnosis of a coagulation disorder, bleeding diathesis, progressive peripheral vascular disease or uncontrolled diabetes mellitus * Have a diagnosis of scoliosis that precludes lead placement * Have an existing drug pump and/or SCS system or another active implantable device such as a pacemaker * Have prior experience with SCS * Have a condition currently requiring or likely to require the use of MRI or diathermy * Have metastatic malignant disease or active local malignant disease * Have a life expectancy of less than 1 year * Have an active systemic or local infection * Be pregnant (if female and sexually active, subject must be using a reliable form of birth control, be surgically sterile or be at least 2 years post-menopausal) * Have within 6 months of enrollment a significant untreated addiction to dependency producing medications or have been a substance abuser (including alcohol and illicit drugs) * Be concomitantly participating in another clinical study * Be involved in an injury claim under current litigation * Have a pending or approved worker's compensation claim