University of Birmingham, Birmingham, UK.
The Royal Orthopaedic Hospital NHS Foundation Trust, Birmingham, UK.
Sci Rep. 2021 Jan 27;11(1):2354. doi: 10.1038/s41598-021-81818-z.
The purpose of this work is to identify the resting stance of the torso, defined as the position of the C7 vertebral body relative to the sacrum in a 'birds eye view', as the coronal and sagittal offset, in those without spinal deformity, those with pre and post-operative AIS, and those with Scheuermann's kyphosis (SK). Using ISIS2 surface topography, the coronal and sagittal offset were measured in a prospective manner in all groups. With bivariate ellipses, a mean and 95% confidence ellipse of the data was developed. Statistical analyses was performed to examine the distribution of the data from the groups. A graphical representation of the data was developed. There were 829 without spinal deformity, 289 in both the pre and post-operative with AIS and 59 with SK. The results showed that the mean coronal offset for all groups was between 2 and 6 mm and the sagittal offset was 12 and 26 mm. Statistically significance was seen for both measures between the non-scoliotic and both AIS groups, along with the pre-operative AIS coronal offset and post-operative AIS sagittal offset and the SK measures. However, all mean values were within the 95% confidence ellipse for all of the groups. Regardless of the size or type of spinal deformity, the position of the C7 vertebral body and sacrum remain within the 95% confidence ellipse of that seen in those without spinal deformity. This work defines the Minimally Clinically Important Difference for all of the groups.
本研究旨在明确无脊柱畸形、特发性脊柱侧凸术前和术后、Scheuermann 脊柱后凸患者的躯干静息位，定义为 C7 椎体在“鸟瞰”下相对于骶骨的冠状面和矢状面偏移。采用 ISIS2 表面 topography 对所有组前瞻性地测量冠状面和矢状面偏移。使用双变量椭圆，得出数据的平均值和 95%置信椭圆。对组间数据分布进行统计分析。无脊柱畸形患者 829 例，特发性脊柱侧凸术前和术后患者 289 例，Scheuermann 脊柱后凸患者 59 例。结果显示，所有组的平均冠状面偏移均在 2-6mm 之间，矢状面偏移为 12-26mm。无脊柱畸形组与特发性脊柱侧凸组之间，以及特发性脊柱侧凸术前冠状面偏移和术后矢状面偏移与 Scheuermann 脊柱后凸的测量值之间，两种测量方法均有统计学意义。然而，所有平均值均在所有组的 95%置信椭圆内。无论脊柱畸形的大小或类型如何，C7 椎体和骶骨的位置均在无脊柱畸形患者的 95%置信椭圆内。本研究为所有组定义了最小临床重要差异。
