 There is straightening of the normal lumbar lordosis. The vertebral body heights are well-maintained. There is moderate loss of disc height at L3-4 and severe loss of disc height with endplate degenerative changes at L4-5. No worrisome focal marrow signal abnormality is appreciated. The distal spinal cord and conus are within normal limits with the conus terminating at the L1 level.T12-L1: No significant disc bulge, herniation, spinal canal or foraminal stenosis. L1-L2: No significant disc bulge, herniation, spinal canal or foraminal stenosis.  L2-L3: Mild disc bulge, bilateral facet arthropathy and thickening of the ligamentum flavum. No significant spinal canal or foraminal stenosis. L3-L4: Disc bulge, bilateral facet arthropathy and thickening of the ligamentum flavum, contributing to mild bilateral foraminal stenosis and mild spinal canal stenosis. L4-L5: Disc bulge, bilateral facet arthropathy and thickening of the ligamentum flavum, contributing to mild right and mild to moderate left foraminal stenosis with encroachment at the right lateral recess. No significant spinal canal stenosis. L5-S1: Disc bulge, bilateral facet arthropathy and thickening of the ligamentum flavum, contributing to mild to moderate right and mild left foraminal stenosis with encroachment of the nerve roots at the right lateral recess, unchanged. No significant spinal canal stenosis.
No significant interval change in the degenerative changes of the lower lumbar spine, which contribute to mild bilateral foraminal and spinal canal stenosis at L3-L4, variable foraminal stenosis and encroachment of the right lateral recesses at L4-L5 and L5-S1. No significant spinal canal stenosis at the other levels.