Male, 83 years old, with right lower extremity radicular pain. Alignment is anatomic, allowing for mild straightening of the lumbar lordosis. Vertebral body heights are preserved. There is degenerative endplate signal abnormality at L4-5. Elsewhere, the marrow signal characteristics are unremarkable. The visualized spinal cord, conus and cauda equina are within normal limits.L1-2: Central annular fissure without protrusion. No significant spinal canal or neuroforaminal stenosis. L2-3: Facet hypertrophy and ligamentum flavum thickening. No significant spinal canal or neuroforaminal stenosis. L3-4: Facet hypertrophy and ligamentum flavum thickening. Mild bulging disc. No significant generalized spinal canal stenosis. Mild bilateral foraminal narrowing. L4-5: Facet hypertrophy and ligamentum flavum thickening. Loss of disc height and disc bulging. Mild spinal canal narrowing. Moderate bilateral foraminal narrowing. L5-S1: Facet hypertrophy and ligamentum flavum thickening. Loss of disc height and disc bulging. Prominence of the epidural fat. No significant spinal canal stenosis. Mild to moderate foraminal narrowing.
Disc degeneration at L4-5 results in a mild spinal canal stenosis and moderate bilateral foraminal narrowing.Disc degeneration at L5-S1 results in only mild spinal canal narrowing and mild bilateral foraminal narrowing.