Comparison of Intraspinal Nerve Root Stimulation With Dorsal Column Stimulation

Inclusion Criteria:

• Have chronic low back pain following spine surgery (Failed Back Surgery Syndrome.
• Be an appropriate candidate for Spinal Cord Stimulation (SCS) and for the surgical procedures required for SCS.
• Have experienced significant though short-lived pain relief with local anesthetic injection.
• Be 18 years of age or older.
• Be willing and able to comply with all study related procedures and visits.
• Be capable of reading and understanding patient information materials and giving written informed consent.

Exclusion Criteria:

• Have any significant medical condition that is likely to interfere with study procedures.
• Have any evidence of neurologic instability.
• Have any other chronic pain condition.
• Have a condition currently requiring or likely to require the use of MRI or diathermy.
• Have an active implantable device.
• Are pregnant or planning to become pregnant in the next year.
• Are a current substance abuser (including alcohol and illicit drugs).
• Have a significant psychiatric disorder.
• Have participated in any drug or device trial in the last 4 weeks or plan to participate in any other trial during the duration of this study.