50 year-old male for pre-surgical planning of lumbar fusion There is a normal lumbar lordosis. The lumbar alignment and the vertebral body heights appear normal. Spinal canal appears uniformly narrowed from congenitally short pedicles. The pedicles show no bony abnormality. Bilateral spondylolyses of L5 is again noted with grade 1 anterolisthesis of L5 on S1 and pseudo-bulge of the L5/S1 disk. Hypoattenuating lesion at the L2 vertebral body corresponding meningioma as seen on prior MRI.Degenerative changes as described below:T12/L1: No central spinal stenosis or neuroforaminal compromise.L1/L2: No central spinal stenosis or neuroforaminal compromise.L2/L3: Minimal left neuroforaminal narrowing. No central spinal stenosis or right neuroforaminal compromise.L3/L4: No central spinal stenosis or neuroforaminal compromise.L4/L5: Moderate disk bulge and facet joint/ligamentum flavum hypertrophy showing some compromise in the transverse dimension of the spinal canal. No compromise of the spinal canal in the AP direction. No detectable neuroforaminal compromise. Anterior osteophyte formation is also noted.L5/S1: Pseudo-bulge of the disk. Facet joint/ligamentum flavum hypertrophy causing bilateral neuroforaminal compromise. No central canal stenosis.
1. Bilateral spondylolyses of L5 with grade 1 anterolisthesis of L5 on S1. 2. Congenitally shortened pedicles without bony abnormality. 3. Multilevel degenerative changes as described above.