Measures of radiographic pelvic and spinal parameters of sagittal balance analysis have become of considerable importance for reconstructive surgery of the spine, particularly in cases of degenerative spondylolisthesis. The authors conducted a retrospective study of clinical outcomes and a radiological review on 231 patients with one or two level degenerative spondylolisthesis. First, patients were classified using preoperative pelvic parameters and evaluations were conducted using mean values of pre- and postoperative spinopelvic parameters. Second, patients were divided into two study groups, that is, Group A (n=105; exhibited no improvement (increase or no change) in pelvic tilt postoperatively) and Group B (n=126; exhibited pelvic tilt improvement (decrease) postoperatively). Clinical outcomes in the two groups were compared using Visual Analogue Pain Scores (VAS) and Oswestry disability index (ODI). All preoperative pelvic parameters show restoration tendency after PLIF surgery for spondylolisthesis, and greater deviations of preoperative pelvic parameters from normality showed greater recovery postoperatively. VAS and ODI improvements at follow-up were poorer in group A than in group B.

1. 서 론
2. 대상 및 방법
3. 결 과
4. 고 찰
5. 결 론
6. 감사의 글
7. 참고문헌

• 김희열(Department of Neurosurgery, Chosun University Hospital, College of Medicine, Gwangju, Korea) | Hee Yeul Kim
• 주창일(Department of Neurosurgery, Chosun University Hospital, College of Medicine, Gwangju, Korea) | Chang Il Ju Corresponding author
• 이승명(Department of Neurosurgery, Chosun University Hospital, College of Medicine, Gwangju, Korea) | Seung Myung Lee