Antelisthesis of L5 body, osteochondrosis, deforming spondylosis. The posterior longitudinal ligament is indurated (1, 2), watched at the level of two vertebrae and ends in osteophytes (3) at the place of attachment of L5-S1 vertebrae.
Osteochondrosis of lumbar spine with bone vegetations of terminal plates, protrusion of L5-S1 disk, epidural fibrosis (2, 3) and degenerative changes of the pulpous nucleus of L5-S1 disk. Prolapse of L4-L5 disk with compression of the dural sac (1).