Summary of Background Data.Short-and mid-term clinical and plain radiographic results of isthmic spondylolisthesis and of PLF, AF, and CF in seere slip are well documented.

• 背景资料概述：峡部裂型脊椎滑脱的短期、中期临床和普通X线结果，以及PLF、AF、CF治疗严重的滑脱等均有较多的文献报道。