Degenerative spondylolisthesis (DS) is an acquired anterior vertebral displacement without disruption of the pars interarticularis, associated with the degenerative changes of aging, such as intervertebral disc degeneration, Ligamentum flavum hypertrophy or spinal buckling, and osteophyte proliferation 1) 2)
see Cervical degenerative spondylolisthesis.