Theories differ over preferred management of low back conditions. Dr. Jerry Jarvik, Professor of Radiology at the University of Washington, discusses important improvements of the interpretation of lumbar MRI scans. Dr. Michael Lee, Assistant Professor of Orthopaedic Surgery at the University of Washington Medical Center, also presents a series of studies comparing conventional surgical decompression techniques for lumbar spinal stenosis to more recently developed techniques. Dr. Rick Bransford, Assistant Professor at the Department of Orthopaedic Surgery and Adjunct Assistant Professor of Neurological Surgery at UW, reviews implants intended to relieve spinal stenosis, known as “interspinous spacers.” Finally, Dr. Randall Chesnut, Professor of Neurological Surgery and Adjunct Professor of Orthopaedic Surgery at Harborview Medical Center, addresses one of the more long-standing controversies in spine surgery: the realignment of lumbar spondylolisthesis (lower back slippage). This is the sixth of seven programs in the Eighth Annual Harborview Spine Symposium. From the Series:Eighth Annual Harborview Spine Symposium: Resolving Ongoing Controversies in Spine Surgery Using an Evidence-Based Medicine Approach