Study Of Disc Anaesthesia For The Preoperative Diagnosis Of Chronic Lower Back Pain

Completed · Phase 4

Conditions studied: Low Back Pain

In brief

The primary objective of this study is to document and compare diagnostic test results and procedure safety in subjects undergoing both Functional Anaesthetic DiscographyTM (F.A.D.) and provocative discography (PD) and determine the appropriateness of the F.A.D. procedure data collection script for use in a larger clinical trial.

Key facts

Study ID

NCT00443781

Run by

Medtronic Spine LLC

People needed

62

Starts

2007-03-01

Expected to finish

2009-06-01

Last updated by the study team

2021-01-05

Who can join

Age: 21 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Age > 21.
• Chronic axial low back pain without radicular pain for > six months, not responding to at least three months of non-surgical management under the direction of a physician.
• One or two discs at L5/S1, L4/L5 or L3/L4 with abnormal findings by MRI, including any of the following: loss of disc hydration, loss of disc height, high intensity zone (HIZ), Modic changes at adjacent vertebral endplates, or herniation without nerve root compression.
• Subject states that he/she is willing to undergo lumbar spinal fusion, disc replacement, or other definitive treatment if eventual diagnosis supports such treatment.
• Physician believes that discography is clinically indicated for the purpose of surgical decision-making for the subject.
• Pre-treatment low back pain by numerical rating scale (NRS) score > 4 (measured as average in last 24 hours on a 0-10 scale).
• Pre-treatment Oswestry Disability Index (ODI) > 40 (0 - 100 scale).
• Subject states availability for all study visits.
• Subject is able to understand the risks and benefits of participating in the study and provides written informed consent.

You may not qualify if…

• Known osteoporosis or osteopenia, metabolic bone disorder, or history of chronic steroid use (the equivalent of 7.5 milligrams of daily prednisone use for > 6 months).
• Suspected painful disc degeneration (based on clinical examination and MRI findings) outside of L5/S1, L4/L5 or L3/L4 levels.
• MRI shows disc abnormalities (listed in Inclusion Criteria #3) at all 3 lower lumbar discs (L3/L4, L4/L5 and L5/S1).
• Abnormal neurologic exam attributable to lumbar disc disease, herniation, or lumbar stenosis.
• Back, buttock or pelvic pain suspected to be due to spinal stenosis, spinal fractures, infection, cancer, facet arthropathy or other hip or pelvis pathology.
• Schmorl's node or endplate disruption evident on MRI at L5/S1, L4/L5, or L3/L4.
• Medical history, physical examination or radiographic evidence (e.g., disc height too narrow) to suggest that either PD or F.A.D. may not be technically feasible.
• Any previous lumbar spine fusion or disc replacement.
• More than grade 1 spondylolisthesis as assessed by x-ray or MRI.
• Significant clinical comorbidity that may potentially interfere with data collection or follow-up (e.g., dementia, severe comorbid illness).
• History of major depression, psychosis or somatization disorder, or panic disorder.
• Allergy to any materials used in PD or F.A.D. devices, contrast, lidocaine, or bupivacaine.
• Any evidence of disc or systemic infection.
• Pregnant or child-bearing potential and not currently on adequate birth control method.

Where it is running

• The Spine and Neurosurgery Center — Huntsville, Alabama, United States
• Spine Source — Beverly Hills, California, United States
• Pacific Spine Clinic — Escondido, California, United States
• UCSD Orthopaedic Surgery — San Diego, California, United States
• Emory Orthopaedics & Spine Center — Atlanta, Georgia, United States
• Hanover Orthopaedic Associates, Inc. — Hanover, Pennsylvania, United States
• Texas Back Institute — Plano, Texas, United States
• East Texas Medical Center — Tyler, Texas, United States
• Evergreen Surgical Center — Kirkland, Washington, United States
• Milwaukee Neurological Institute — Milwaukee, Wisconsin, United States

Full record on ClinicalTrials.gov

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