Correlations among four measures of thoracic kyphosis in older adults.
Correlations among four measures of thoracic kyphosis in older adults.
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DOI：
10.1007/s00198-015-3368-7
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Kado DM
中科院分区：
文献类型：
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作者：
Tran TH;Wing D;Davis A;Bergstrom J;Schousboe JT;Nichols JF;Kado DM
有许多方法可以测量胸椎后凸，从简单的临床评估到更复杂的评估。我们评估了四种常用的后凸测量方法之间的相关性：Cobb角、Debrunner后凸测量仪、后凸指数和块法。每项指标都与其他指标相关，证实了高临床和研究适用性。本研究的目的是评估老年人胸椎后凸的四种常用测量方法之间的相关性。从圣地亚哥社区招募了72名65-96岁的男性和女性。在基线门诊访视期间，对同一人的四项脊柱后凸测量进行了评估。在卧位（L）和站立位（ST）进行了两次测量：（1）根据双X线吸收测定法（DXA）图像计算的Cobb角（L），（2）通过量角器（ST）测量的Debrunner后凸计（DK）角，（3）使用建筑师的弯曲标尺（ST）计算的后凸指数（KI），和（4）块法，包括计算当平躺在DXA台上（L）时达到中性头部位置所需的1.7 cm厚的块的数量。使用斯皮尔曼等级相关系数来确定每个脊柱后凸测量之间的关联强度。结果以Cobb角为金标准，块法相关性最低（rs =0.63，p<0.0001），Debrunner法相关性中等（rs=0.65，p<0.0001），后凸指数相关性最高（rs=0.68，p<0.0001）。后凸指数与Debrunner后凸计之间的相关性最强（rs=0.76，p<0.0001）。在老年男性和女性中，无论是在卧位还是站立位评估，胸椎后凸的所有四种测量方法都彼此显著相关。因此，这些措施中的任何一种都证明了潜在的临床和研究效用。
There are many ways to measure thoracic kyphosis ranging from simple clinical to more complex assessments. We evaluated the correlation among four commonly used kyphosis measures: Cobb angle, Debrunner kyphometer, kyphotic index, and the blocks method. Each measure was correlated with the others, confirming high clinical and research applicability. The purpose of this study was to assess the associations among four commonly used measures of thoracic kyphosis in older adults. Seventy two men and women aged 65–96 were recruited from the San Diego community. Four kyphosis measures were assessed in the same person during a baseline clinic visit. Two measures were done in the lying (L) and two in the standing (ST) position: (1) Cobb angle calculated from dual X-Ray absorptiometry (DXA) images (L), (2) Debrunner kyphometer (DK) angle measured by a protractor (ST), (3) kyphotic index (KI) calculated using an architect’s flexicurve ruler (ST), and (4) the blocks method involving counting the number of 1.7 cm-thick blocks required to achieve a neutral head position while lying flat on the DXA table (L). Spearman rank correlation coefficients were used to determine the strength of the association between each kyphosis measure. Results Using the Cobb angle as the gold standard, the blocks method demonstrated the lowest correlation (rs =0.63, p<0.0001), the Debrunner method had a moderate correlation (rs=0.65, p<0.0001), and the kyphotic index had the highest correlation (rs=0.68, p<0.0001). The correlation was strongest between the kyphotic index and the Debrunner kyphometer (rs=0.76, p<0.0001). In older men and women, all four measures of thoracic kyphosis were significantly correlated with each other, whether assessed in the lying or standing position. Thus, any of these measures demonstrate both potential clinical and research utility.