Hanson Darrell S, Bridwell Keith H, Rhee John M, Lenke Lawrence G
Institute for Spinal Disorders, Houston, Texas, USA.
Spine (Phila Pa 1976). 2002 Sep 15;27(18):2026-9. doi: 10.1097/00007632-200209150-00011.
The development of isthmic spondylolisthesis is influenced by forces across the lumbosacral region of the spine. Pelvic incidence is a radiographic parameter that has been shown to be an independent parameter that influences both sagittal spinal balance and pelvic orientation. Our hypothesis then is that there is a positive correlation between pelvic incidence and spondylolisthesis.
A radiographic analysis of cases with spondylolisthesis.
To try to assess the correlation between pelvic incidence in both low-grade and high-grade spondylolisthesis in both a pediatric and an adult population.
The concept of pelvic incidence has been introduced into the literature. Its exact association with spondylolisthesis has not yet been clarified.
Forty patients with spondylolisthesis were identified and divided into two groups: low-grade (Meyerding I-II) and high-grade (Meyerding III and higher). Radiographic parameters measured included lumbar sagittal alignment (T12-S1), sacral inclination, slip angle, and pelvic incidence. The spondylolisthesis was classified according to the Meyerding-Newman classifications and the slip angle. Radiographic measurements were also done in two control groups; there were 20 pediatric and 20 adult controls (mean age 11.8 years and 60.0 years, respectively). Unpaired t test analysis and Pearson correlation analysis were then done.
Mean pelvic incidence was 47.4 degrees in the pediatric control group, 57 degrees in the adult control group, 68.5 degrees in the low-grade isthmic spondylolisthesis group, and 79.0 degrees in the high-grade isthmic spondylolisthesis group. Pelvic incidence was found to be significantly higher in the high- and low-grade spondylolisthesis groups compared with both control groups (P = 0.0001). Pelvic incidence was significantly higher in the high-grade isthmic spondylolisthesis group than in the low-grade isthmic spondylolisthesis group (P = 0.007). A significant correlation existed between pelvic incidence and Meyerding-Newman scores (P = 0.03).
Pelvic incidence was significantly higher in patients with low- and high-grade isthmic spondylolisthesis as compared with controls and had significant correlation with the Meyerding-Newman grades (P = 0.03).
峡部裂型腰椎滑脱的发展受到脊柱腰骶部受力的影响。骨盆入射角是一项影像学参数，已被证明是影响脊柱矢状面平衡和骨盆方向的独立参数。因此，我们的假设是骨盆入射角与腰椎滑脱之间存在正相关。
对腰椎滑脱病例进行影像学分析。
试图评估儿童和成人中低度和高度腰椎滑脱患者的骨盆入射角之间的相关性。
骨盆入射角的概念已被引入文献。其与腰椎滑脱的确切关联尚未阐明。
确定40例腰椎滑脱患者并分为两组：低度（迈耶丁I-II级）和高度（迈耶丁III级及以上）。测量的影像学参数包括腰椎矢状面排列（T12-S1）、骶骨倾斜度、滑移角和骨盆入射角。根据迈耶丁-纽曼分类法和滑移角对腰椎滑脱进行分类。还对两个对照组进行了影像学测量；有20名儿童和20名成人对照（平均年龄分别为11.8岁和60.0岁）。然后进行非配对t检验分析和Pearson相关分析。
儿童对照组的平均骨盆入射角为47.4度，成人对照组为57度，低度峡部裂型腰椎滑脱组为68.5度，高度峡部裂型腰椎滑脱组为79.0度。发现高度和低度腰椎滑脱组的骨盆入射角均显著高于两个对照组（P = 0.0001）。高度峡部裂型腰椎滑脱组的骨盆入射角显著高于低度峡部裂型腰椎滑脱组（P = 0.007）。骨盆入射角与迈耶丁-纽曼评分之间存在显著相关性（P = 0.03）。
与对照组相比，低度和高度峡部裂型腰椎滑脱患者的骨盆入射角显著更高，且与迈耶丁-纽曼分级存在显著相关性（P = 0.03）。
