6Umehara S, Zindrick MR, Patwaradhan AG, et al. The biomchanical effect of postoperative hypolordosis in instrumented andadjacent spinal segments [J]. Spine, 2000, 25 : 1617 - 1627.
7M. Spruit,P. Pavlov,J. Leitao,M. de Kleuver,P. Anderson,F. den Boer. Posterior reduction and anterior lumbar interbody fusion in symptomatic low-grade adult isthmic spondylolisthesis: short-term radiological and functional outcome[J] 2002,European Spine Journal(5):428～433
8Herron L. Recurrent disc herniation:results of repeat laminecto- my and diseeetomy [J]. Spinal Disorder, 1994,7(2) : 161-166.
9Carragee EJ,Han MY, Suen PW, et al. Clinical outcomes after lumbar discectomy for sciatica: the effects of fragment type and annular competence[J]. J Bone Joint Surg (Am), 2003, 85A (1):102-108.
10Dora C, Schmid MR, Elfering A,et al. Lumbar disk herniation: do MR imaging finding predict recurrence after surgical diseecto- my [J]. Radicalogy,2007,235(2) :562-567.
