Validity of flexicurve and motion capture for measurements of thoracic kyphosis vs standing radiographic measurements.
Validity of flexicurve and motion capture for measurements of thoracic kyphosis vs standing radiographic measurements.
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DOI：
10.1002/jsp2.1120
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发表时间：
2020-09
期刊：
影响因子：
3.7
通讯作者：
Anderson DE
中科院分区：
文献类型：
--
作者：
Grindle DM;Mousavi SJ;Allaire BT;White AP;Anderson DE
胸椎后凸在健康成人中各不相同，通常随年龄增长而增加。过度脊柱后凸（hyperkyphosis）与负面健康有关。脊柱对齐也会影响脊柱负荷，对椎骨骨折和背痛等疾病有影响。后凸畸形的有效测量对于年龄相关姿势变化的临床和研究评估是必要的，并支持改善脊柱状况的生物力学理解。然而，非放射学技术的独立验证仍然有限。本研究的目的是比较站立位X线片后凸测量值与非X线片测量值，并使用屈曲和运动分析标记预测胸椎后凸，以确定其有效性。在40名成人受试者中，每名受试者均获得了13个胸椎后凸的非放射学测量值，这些受试者还接受了胸椎的站立位X线片。测量包括通过将多项式或圆拟合到非放射学数据得出的估计值，以及使用先前发表的方法计算的预测值。计算放射学和非放射学测量之间的类内相关性（ICC）和均方根误差（RMSE），以确定有效性。大多数脊柱后凸的非影像学估计值与影像学测量值相似，有效性水平为弱至中等，RMSE范围为8.0°至20.8°。然而，根据标记物测量值，确定了具有中度至良好ICC的放射学测量值的无偏估计值，并创建了具有类似有效性的新预测方程，该方程也考虑了年龄和体型。临床意义：这些胸椎后凸的非影像学测量可应用于临床实践或临床研究，并认识到特定的局限性。胸椎后凸的非影像学测量的独立验证仍然有限。在本研究中，对19 - 93岁成人样本中胸椎后凸的基于屈曲和运动分析的测量与站立位X线片测量进行了验证。确定了基于运动分析的具有中等至良好有效性的无偏测量值，并创建了具有类似有效性的新预测方程，该方程还考虑了年龄和体型。
Thoracic kyphosis varies among healthy adults and typically increases with age. Excessive kyphosis (hyperkyphosis) is associated with negative health. Spinal alignment also affects spine loading, with implications for conditions such as vertebral fractures and back pain. Valid measurements of kyphosis are necessary for clinical and research assessment of age‐related posture changes, and to support improved biomechanical understating of spine conditions. Independent validation of non‐radiographic techniques, however, remains limited. The goal of this study was to compare standing radiographic kyphosis measurements with non‐radiographic measurements and predictions of thoracic kyphosis using flexicurve and motion analysis markers, in order to determine their validity. Thirteen non‐radiographic measures of thoracic kyphosis were obtained in each of 40 adult subjects who also underwent standing radiographs of the thoracic spine. Measures included estimates derived by fitting of polynomials or circles to the non‐radiographic data, as well as predictions calculated using previously published methods. Intra‐class correlations (ICC) and root‐mean square errors (RMSEs) were calculated between radiographic and non‐radiographic measures to determine validity. Most non‐radiographic estimates of kyphosis show similar, weak to moderate levels of validity when compared to radiographic measurements, and RMSEs ranging from 8.0° to 20.8°. Unbiased estimates of radiographic measurements with moderate to good ICCs were identified, however, based on marker measurements, and new prediction equations were created with similar validity that also account for age and body habitus. Clinical significance: These non‐radiographic measurements of thoracic kyphosis can be applied to clinical practice or to clinical studies with recognition of specific limitations. Independent validation of non‐radiographic measurements of thoracic kyphosis remains limited. In this study, flexicurve and motion‐analysis based measurements were validated versus standing radiographic measurements of thoracic kyphosis in a sample of adults aged 19 ‐ 93. Unbiased measurements based on motion analysis with moderate to good validity were identified, and new prediction equations were created with similar validity that also account for age and body habitus.
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影响因子：
39.2
作者：
Kado DM;Lui LY;Ensrud KE;Fink HA;Karlamangla AS;Cummings SR;Study of Osteoporotic Fractures
通讯作者：
Study of Osteoporotic Fractures
DOI：
10.1097/00002517-200102000-00010
发表时间：
2001-02-01
期刊：
JOURNAL OF SPINAL DISORDERS
影响因子：
--
作者：
Korovessis, P;Petsinis, G;Baikousis, A
通讯作者：
Baikousis, A
影响因子：
3
作者：
Lundon, KMA;Li, AMWY;Bibershtein, S
通讯作者：
Bibershtein, S
影响因子：
4
作者：
Greendale, G. A.;Nili, N. S.;Huang, M. -H.;Seeger, L.;Karlamangla, A. S.
通讯作者：
Karlamangla, A. S.
影响因子：
2.1
作者：
Ignasiak, Dominika;Rueger, Andrea;Ferguson, Stephen J.
通讯作者：
Ferguson, Stephen J.