Key words : cerical spondylolysis , spondylolisthesis , stress fractures .

关键词：颈椎峡部裂，脊椎滑脱，应力性骨折。

To evaluate the clinical effect of using posterior intervertebral fusion device and pedicle screw internal fixation to treat lumber spondylolisthesis .

结论采用经后路椎间融合器结合椎弓根内固定能使腰椎滑脱症状改善明显，复位满意，固定牢靠，并发症少，临床效果满意。

Objective to research the relationship of lumbosacral angle with lumbar spinal stability and degenerative lumbar spondylolisthesis .

目的探讨腰骶角与腰椎稳定性、变性脊柱滑脱之间的关系。