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

Eligibility 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.
• * 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.