Are first-time episodes of serious LBP associated with new MRI findings?
GROUND: Magnetic resonance (MR) imaging is frequently used to evaluate first-time episodes of serious low back pain (LBP). Common degenerative findings are often interpreted as recent developments and the probable anatomic cause of the new symptoms. To date no prospective study has established a baseline MR status of the lumbar spine in subjects without significant LBP problems and prospectively surveyed these subjects for acute changes shortly after new and serious LBP episodes. This method can identify new versus old MR findings possibly associated with the acute symptomatic episode. PURPOSE: To determine if new and serious episodes of LBP are associated with new and relevant findings on MRI. STUDY DESIGN: Prospective observational study with baseline and post-LBP MRI monitoring of 200 subjects over 5 years. OUTCOME MEASURES: Clinical outcomes: LBP intensity (visual analogue scale), Oswestry Disability Index, and work loss. MRI outcomes: disc degeneration, herniation, annular fissure
