Spondylolisthesis, pelvic incidence, and spinopelvic balance -: A correlation study
Spondylolisthesis, pelvic incidence, and spinopelvic balance -: A correlation study
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DOI：
10.1097/01.brs.0000138279.53439.cc
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发表时间：
2004-09-15
期刊：
影响因子：
3
通讯作者：
Dimnet, J
中科院分区：
文献类型：
--
作者：
Labelle, H;Roussouly, P;Dimnet, J
研究设计.一项关于发育性脊椎前移矢状面排列的回顾性研究。探讨骨盆解剖结构的作用及其对发育性脊椎前移躯干整体平衡的影响。背景资料摘要。骨盆入射角（PI）是一个基本的解剖学参数，对每个个体来说是特定的和恒定的，并且独立于骨盆的三维方向。最近的研究表明，高PI和峡部裂性腰椎滑脱患者之间存在关联。采用专用软件分析了214例发育性L5-S1脊椎前移受试者的脊柱和骨盆侧位站立位X线片，可计算以下参数：骨盆发病率（PI）、骶骨倾斜度（SS）、骨盆倾斜度（PT）、腰椎前凸（LL）、胸椎后凸（TK）和脊椎前移等级。所有测量均由同一人完成，并与160名正常受试者的队列进行比较。使用Student检验比较曲线类型之间的参数，并使用Pearson相关系数研究所有参数之间的相关性（α = 0.01）。腰椎滑脱患者PI、SS、PT和LL显著增高（P <0.01），而TK显著降低。PI与SS、PT和LL呈线性正相关（0.41-0.65）。此外，随着脊椎滑脱严重程度的增加，两个人群之间的差异以直接线性方式增加。由于PI是每个个体特有的恒定解剖骨盆变量，并强烈决定SS，PT和LL，这些变量是位置依赖性变量，因此本研究表明骨盆解剖结构对脊椎前移的发展有直接影响。骨盆发病率增加的研究参与者出现脊椎前移的风险似乎更高，PI增加可能是发育性脊椎前移进展的重要诱因。
Study Design. A retrospective study of the sagittal alignment in developmental spondylolisthesis.Objectives. To investigate the role of pelvic anatomy and its effect on the global balance of the trunk in developmental spondylolisthesis.Summary of Background Data. Pelvic incidence (PI) is a fundamental anatomic parameter that is specific and constant for each individual, and independent of the three-dimensional orientation of the pelvis. Recent studies have suggested an association between a high PI and patients with isthmic spondylolisthesis.Methods. The lateral standing radiographs of the spine and pelvis of 214 subjects with developmental L5-S1 spondylolisthesis were analyzed with a dedicated software allowing the calculation of the following parameters: pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), lumbar lordosis (LL), thoracic kyphosis (TK), and grade of spondylolisthesis. All measurements were done by the same individual and compared to those of a cohort of 160 normal subjects. Student's tests were used to compare the parameters between the curve types and Pearson's correlation coefficients were used to investigate the association between all parameters (alpha = 0.01).Results. PI, SS, PT, and LL are significantly greater (P < 0.01) in subjects with spondylolisthesis, while TK is significantly decreased. PI has a direct linear correlation (0.41-0.65) with SS, PT, and LL. Furthermore, the differences between the two populations increase in a direct linear fashion as the severity of the spondylolisthesis increases.Conclusions. Since PI is a constant anatomic pelvic variable specific to each individual and strongly determines SS, PT, and LL, which are position-dependent variables, this study suggests that pelvic anatomy has a direct influence on the development of a spondylolisthesis.-Study participants with an increased pelvic incidence appear to be at higher risk of presenting a spondylolisthesis, and an increased PI may be an important factor predisposing to progression in developmental spondylolisthesis.