Evaluation of Multi-Tined Expandable Electrode (MEE) Efficacy and Safety in Treatment of Lumbar Facet Arthropathy by Radiofrequency Neurotomies Compared to Conservative Medical Management.

Inclusion Criteria: * Age \> 18 years old. * Patients with pain lasting at least 6 months. * Patients with history of non-radiating low back pain. * Patient who had two diagnostic medial branch blocks (MBB) with significant (\>50%) improvement on both injections. * Patient has signed study-specific informed consent. * Patient has the necessary mental capacity to participate and is physically able to comply with study protocol requirements. Exclusion Criteria: * Patient with low back pain with radiation or involvement of pain going into their legs below their knees. * Patient did not receive satisfactory relief from diagnostic MBB (\<50% relief). * Patient is unable to receive radiation exposure. * Patient is currently pregnant. * Patient has a current local overlying low back or systemic infection. * Patient currently receiving or seeking workers compensation, disability remuneration, and/or involved in injury litigation. * Known or suspected drug or alcohol abuse. * Diagnosed psychiatric disease (e.g., schizophrenia, major depression, personality disorders) that could interfere with study participation. * Patient is participating in an investigational study or has been involved in an investigational study within 3 months prior to evaluation for participation. * Patient has an implanted intrathecal pump or spinal neuromodulation device. * Patient currently on daily oral morphine equivalent (OME) of 50.