Measurement of Acetabular Anteversion in Developmental Dysplasia of the Hip in Children by Two- and Three-dimensional Computed Tomography
Measurement of Acetabular Anteversion in Developmental Dysplasia of the Hip in Children by Two- and Three-dimensional Computed Tomography
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DOI：
10.1177/147323000903700234
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发表时间：
2009-03-01
影响因子：
1.6
通讯作者：
Wang, E. B.
中科院分区：
文献类型：
--
作者：
Li, L. Y.;Zhang, L. J.;Wang, E. B.
本研究评估了66例髋关节发育不良儿童的髋臼前倾（AA）角度（132个髋：24个左髋，25个右髋，17个双侧髋和49个未受影响的髋作为对照）。AA通过二维和三维计算机断层扫描（2D-CT和3D-CT）测量。测量由三名观察员进行，并在两周后由其中一名观察员重复。使用类内相关系数分析了观察者内部和观察者之间的一致性。对于所有髋部，2D-CT与3D-CT测量的平均AA （+/- SD）差异有统计学意义（分别为15.76 +/- 5.23度和16.76 +/- 4.43度）。未受影响和受影响髋关节的3D-CT平均（SD） AA也有统计学差异（分别为13.92 +/- 3.95度和18.44 +/- 3.82度）。患病时年龄与AA之间存在显著正相关，但并非未受影响。3D-CT在评估AA方面比2D-CT表现出更好的观察者内部和观察者之间的一致性，因此是一种更可靠的AA测量方法。AA升高是髋关节发育不良解剖异常的一个组成部分，而且这种异常随着年龄的增长而恶化。
This study assessed the angle of acetabular anteversion (AA) in 66 children with developmental dysplasia of the hip (132 hips: 24 left, 25 right, 17 bilateral and 49 unaffected hips as controls). The AA was measured by two- and three-dimensional computed tomography (2D-CT and 3D-CT). Measurements were taken by three observers and repeated 2 weeks later by one of these observers. Intra- and inter-observer agreement was analysed using the intra-class correlation coefficient. For all hips, the mean AA (+/- SD) measured by 2D-CT versus 3D-CT was statistically significantly different (15.76 +/- 5.23 degrees versus 16.76 +/- 4.43 degrees, respectively). The mean ( SD) AA by 3D-CT in unaffected and affected hips was also statistically significantly different (13.92 +/- 3.95 degrees versus 18.44 +/- 3.82 degrees, respectively). A significant positive correlation between age at presentation and AA was found in affected, but not unaffected, hips. The 3D-CT showed better intra- and inter-observer agreement than 2D-CT for assessing AA hence is a more reliable measurement of AA. An increased AA is one component of anatomical abnormalities in developmental dysplasia of the hip and the abnormality appears to worsen with age.