The clinical assessment of scoliosis is based on the recognition of asymmetry. It is not clear what the degree of asymmetry is in a population without scoliosis, which could make the differentiation between abnormal and normal uncertain. This study defines the range of normality in certain parameters of torso shape that are also associated with the clinical assessment of scoliosis. This was done by analysing the surface topography of a group of 195 children serially measured over a 5-year period. The analysis considered both the spinal curvature and the relative position of shoulders, axillae and waist on each side. The bivariate relationships were examined using 95% confidence interval data ellipses. Our results showed that a degree of spinal curvature was seen, either as a main thoracic or main thoracolumbar curve. The distribution of the data about a mean point is illustrated by 95% confidence interval (CI) data ellipses with shoulder, axilla and waist data plotted against spinal curvature. The mean values were close to zero (exact symmetry) for all of the measured parameters, with the ellipses showing little differences in the distributions. We conclude that mild asymmetry of the measured torso parameters is normal. These results define what is normal and beyond what point asymmetry becomes abnormal. This information is of use for those managing and counselling patients with scoliosis both before and after surgery.

译文

脊柱侧弯的临床评估是基于对不对称的认识。目前尚不清楚没有脊柱侧弯的人群的不对称程度,这可能使异常与正常之间的区别不确定。这项研究定义了躯干形状某些参数的正常范围,这些参数也与脊柱侧弯的临床评估有关。这是通过分析在5年内连续测量的一组195名儿童的表面形貌来完成的。分析同时考虑了脊柱曲率以及肩,腋窝和腰部在两侧的相对位置。使用95% 置信区间数据椭圆检查双变量关系。我们的结果表明,可以看到一定程度的脊柱弯曲,无论是主要的胸弯还是主要的胸腰弯。关于平均点的数据分布通过95% 置信区间 (CI) 数据椭圆来说明,其中肩部、腋窝和腰部数据相对于脊柱曲率绘制。所有测量参数的平均值都接近零 (精确对称),椭圆在分布中几乎没有差异。我们得出的结论是,测得的躯干参数的轻度不对称性是正常的。这些结果定义了什么是正常的,以及超过什么点的不对称变得异常。此信息适用于在手术前后对脊柱侧弯患者进行管理和咨询的人员。

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