 The last well-formed disk space is referred to as L5-S1. There is straightening of the lumbar spine. There are type II degenerative endplate changes at L3-4 and L4-5 with severe loss of disk height and dessication. The conus terminates at L1-2.T12-L1: No disk herniation or spinal stenosis.L1-2: Minimal disk bulge without spinal stenosis.L2-3: Minimal disk bulge without spinal stenosis.L3-4: Disk bulge, mild facet arthropathy with no spinal canal stenosis; disk material abuts the bilateral L4 nerve roots in subarticular zones without subarticular stenosis. Moderate right greater than left neural foraminal stenosis.L4-5: Disk bulge, mild facet arthropathy with no spinal canal stenosis; disk material abuts the bilateral L5 nerve roots in subarticular zones without subarticular stenosis. Moderate bilateral neural foraminal stenosis.L5-S1: Disk bulge with tiny central protrusion with no spinal stenosis.
Multilevel lumbar spondylosis, worst at L3-4 and L4-5 where there are moderate neural foraminal stenoses. No spinal canal stenosis at any level.