Saves the questions and what to expect into your notes, next to the visit they belong to.
Keep this study
Lead
Medtronic Spine LLC
Age
21–any
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible 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).
Subject is able to understand the risks and benefits of participating in the study and provides written informed consent.
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.
You may not be 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.
