Effectiveness of Lumbar Facet Joint Nerve Blocks

Primary Outcome Measure(s) To demonstrate a clinically significant difference between the patients treated with adjuvants and those patients randomized to Group I in the pain status, physical, and psychological status and pain at 3, 6, 12, 18and 24 months post treatment.

Inclusion criteria

• Positive for facet joint pain with comparative local anesthetic blocks

Candidates are over 18 years of age

Subjects with a history of chronic, function limiting low back pain of at least six months in duration Subjects who are able to give voluntary, written informed consent to participate in this investigation Subjects who, in the opinion of the Investigator, are able to understand this investigation, co-operate with the investigational procedures and are willing to return to the center for all the required post-operative follow-ups The subject has not had recent surgical procedures within the last three months.

Exclusion criteria

• Negative or false-positive response to controlled comparative local anesthetic blocks

Narcotic use of greater than Hydrocodone 100 mg/day, Methadone 80 mg or Morphine 100 mg, or dose equivalent

Uncontrolled major Depression or uncontrolled psychiatric disorders

Uncontrolled or acute medical illnesses including coagulopathy, renal insufficiency, chronic liver dysfunction, progressive neurological deficit, urinary sphincter dysfunction, infection, increased intercranial pressure, pseudotumor cerebri, intercranial tumors, unstable angina, and severe chronic obstructive pulmonary disease.

Chronic severe conditions that could interfere with the interpretations of the outcome assessments for pain and bodily function

Women who are pregnant or lactating

Subjects who have participated in a clinical study with an investigational product within 30 days of enrollment

Patients with multiple complaints involving concomitant hip osteoarthritis, will not be amenable to study due to the overlap of pain complaints.

Inability to achieve appropriate positioning and inability to understand informed consent and protocol History of adverse reaction to local anesthetic or anti-inflammatory drugs