63-year-old female with history of chronic back pain and lumbar spondylolisthesis, preop planning for fusion. There are degenerative changes, epidural lipomatosis, and congenital narrowing of the spinal canal in the lower lumbar spine. In particular, at L3-L4, there is facet arthropathy and ligamentum flavum hypertrophy causes slight left neural foraminal stenosis, at L4-L5, there facet arthropathy, ligamentum flavum hypertrophy and a disc bulge causes mild to moderate bilateral neural foraminal stenosis and narrowing of the left lateral recess, and at L5-S1, there is facet arthropathy, ligamentum flavum thickening and a mild disc bulge with minimal bilateral neural foraminal stenosis, but severe spinal canal stenosis. There is associated degenerative bone marrow signal alteration at L4-5 and L5-S1. The vertebral body heights are within normal limits. The vertebral column alignment is within normal limits. The conus medullaris is normal in position. The paraspinous soft tissues are within normal limits.
Degenerative spondylosis, epidural lipomatosis, and congenital narrowing of the spinal canal of the lower lumbar spine.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.