In vivo 3-dimensional analysis of scapular kinematics: comparison of dominant and nondominant shoulders
In vivo 3-dimensional analysis of scapular kinematics: comparison of dominant and nondominant shoulders
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DOI：
10.1016/j.jse.2010.09.012
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发表时间：
2011-06-01
影响因子：
3
通讯作者：
Banks, Scott A.
中科院分区：
文献类型：
--
作者：
Matsuki, Keisuke;Matsuki, Kei O.;Banks, Scott A.
背景：肩胛骨运动的改变常与各种肩关节疾病相关。临床上通常将病理性肩关节与对侧肩关节进行比较，尽管手臂优势，以表征疾病。然而，很少有文章测试的基本假设，优势和非优势的肩膀表现出可比的动态运动学。本研究的目的是比较三维（3-D）肩胛骨运动学的优势和非优势肩在动态肩胛平面elevation使用3-D-2-D（2-dimensional）registration techniques.Materials and Methods：12名健康男性，平均年龄为32岁（范围，27-36）被纳入本研究。在肩胛平面升高和降低期间拍摄双侧透视图像，并使用3-D-2-D配准技术将CT衍生的3-D骨模型与透视图像中的骨轮廓相匹配。结果：优势肩和非优势肩的肩胛骨角度值和肩胛骨节律值之间存在显著性差异（P <0.001），而其他角度值和肩胛骨节律值之间无显著性差异。占主导地位的肩胛骨在休息时向下旋转10度以上，4度以上向上旋转在elevation期间相比，非优势scapule.Discussion/Conclusion：肩胛骨的运动是不一样的优势和非优势武器在健康受试者。优势肩胛骨在休息时进一步向下旋转，并在外展时达到更大的向上旋转。在肩关节病理学的临床评估中应考虑这些差异。
Background: Alterations in scapular motion frequently are seen in association with various shoulder disorders. It is common clinically to compare the pathological shoulder with the contralateral shoulder, in spite of arm dominance, to characterize the disorder. However, there have been few articles that test the underlying assumption that dominant and nondominant shoulders exhibit comparable dynamic kinematics. The purpose of this study was to compare the 3-dimensional (3-D) scapular kinematics of dominant and nondominant shoulders during dynamic scapular plane elevation using 3-D-2-D (2-dimensional) registration techniques.Materials and methods: Twelve healthy males with a mean age of 32 years (range, 27-36) were enrolled in this study. Bilateral fluoroscopic images during scapular plane elevation and lowering were taken, and CT-derived 3-D bone models were matched with the silhouette of the bones in the fluoroscopic images using 3-D-2-D registration techniques. Angular values of the scapula and scapulohumeral rhythm were compared between dominant and nondominant shoulders with statistical analysis.Results: There was a significant difference in upward rotation angles between paired shoulders (P < .001), while significant differences were not found in the other angular values and scapulohumeral rhythm. The dominant scapulae were 10 degrees more downwardly rotated at rest and 4 degrees more upwardly rotated during elevation compared to the nondominant scapulae.Discussion/Conclusion: Scapular motion was not the same between dominant and nondominant arms in healthy subjects. The dominant scapula was rotated further downward at rest and reached greater upward rotation with abduction. These differences should be considered in clinical assessment of shoulder pathology.