Safety and Efficacy Study of the Evoke™ SCS System With Feedback vs. Conventional Stimulation

Inclusion Criteria: * Subject is male or female between the ages of 18 and 80 years. * Have been diagnosed with chronic, intractable pain of the trunk and/or limbs, which has been refractory to conservative therapy for a minimum of 6 months. * Be an appropriate candidate for an SCS trial and the surgical procedures required in this study based on the clinical judgment of the Investigator. * Be willing and capable of giving informed consent 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 outcomes. * Have an existing drug pump and/or SCS system or another active implantable device such as a pacemaker, deep brain stimulator (DBS), or sacral nerve stimulator (SNS). * Have prior experience with SCS. * Have an active systemic infection or local infection in the area of the surgical site. * Be pregnant or nursing (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). * Be concomitantly participating in another clinical study.