 This study examined the pathogenesis of cervical spondylolisthesis by looking at the effect of narrowing the intervertebral disc height on the slipping of the vertebrae. It was found that narrowing the disc height does not stabilize the slipped disc level according to the degenerative cascade. Instead, it was associated with a greater translation of slippage in flexion extension motion in cases of anterior slippage. This suggests that degenerative cascade stabilization for cervical spondylolisthesis may be difficult to achieve. This article was authored by Reoma Aoyama, Junichi Yamane, Ken Nanomia, and others.