 The EVIDENCE trial is a randomized controlled trial comparing the therapeutic effectiveness and cost-effectiveness of the Precision Spinal Cord Stimulation with that of reoperation as a treatment of pain in patients with Failed Back Surgery Syndrome FBSS. FBSS is defined as persistent or recurrent pain following one or more lumbosacral spine surgical procedures. Surgical procedures that can result in FBSS can be categorized as either decompression or decompression followed by fusion with or without instrumentation. The pain of FBSS is categorized as neuropathic, which involves pathological nerve activity and is commonly characterized by patients as shooting or burning andor nociceptive, which signals actual or impending tissue damage or inflammation. 