 The last well formed disk space is referred to as L5-S1, consistent with the last exam. There are findings consistent with bilateral L5 pars inter-articularis defects with no significant spondylolisthesis. There is persistent 15-mm wide defect in the anterior/superior endplate of L4 vertebral body with mild loss of signal and height at the L3-4 disk space. There is persistent stable apparent defect in the left posterior elements of S1 consistent with spina bifida occulta. There is no osseous marrow edema. The conus terminates at L1-2.There is no significant spinal canal or neural foraminal stenosis, or disk herniation at any level of the lumbar spine.
Unchanged bilateral L5 spondylolyses without spondylolisthesis, S1 spina bifida occulta and L4 superior endplate Schmorl's node.