Misalignment and nearly normal alignment of grade 5 spondylolisthesis of L5 on the sacrum

A. X-ray, CT and MRI demonstrate grade 5 spondylolisthesis of L5 on the sacrum in a 12-year-old girl. B. On the left, a preoperative X-ray shows misalignment. On the right, a postoperative X-ray shows nearly normal alignment.