Background

Scapular kinematics of breast cancer survivors are most often evaluated during arm elevation. However, known compensations exist during functional task performance. The purpose of this study was to determine if scapular kinematics of breast cancer survivors during arm elevation are related to scapular kinematics during functional task performance.

Methods

Scapular kinematics of 25 non-cancer controls and 25 breast cancer survivors (split by presence of impingement pain) during arm elevation in 3 planes and 3 reaching and lifting functional tasks were measured. Scapular upward rotation and scapulohumeral rhythm (SHR) at 30° increments of arm elevation were calculated. Between-group differences of upward rotation during arm elevation were evaluated with one-way ANOVAs (p < 0.05). The association of upward rotation angle and SHR during arm elevation and functional tasks was tested with Pearson correlations (p < 0.05).

Findings

Scapular upward rotation was reduced for the breast cancer survivor with pain at lower levels of arm elevation in each plane by up to 7.1° (p = .014 to 0.049). This is inconsistent with functional task results, in which upward rotation decrements occurred at higher levels of arm elevation. Upward rotation angles and SHR during arm elevation had an overall weak-to-moderate relationship (r = 0.003 to 0.970, p = .001 to 0.048) to values from functional tasks. Arm elevation during sagittal plane elevation demonstrated scapular upward rotation that was most closely associated to upward rotation during functional task performance.

Interpretation

Inconsistent relationships suggests that clinical evaluations should adopt basic functional movements for scapular motion assessment to complement simple arm elevations.

中文翻译：

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检查肩cap骨运动的评估方法：比较平面高程和功能性任务绩效的结果

背景

乳腺癌幸存者的肩cap运动学最常在手臂抬高期间进行评估。但是，在执行功能任务期间存在已知的补偿。这项研究的目的是确定手臂抬高期间乳腺癌幸存者的肩k运动与功能性任务执行过程中的肩cap运动是否相关。

方法

在25个非癌症对照和25个乳腺癌幸存者（由于存在撞击痛而分裂）的肩cap运动学中，在3个平面上手臂抬高，3个达到和提升功能任务时进行了测量。计算臂抬高30°时的肩upward向上旋转和肩肱节律（SHR）。用单向方差分析评估臂抬高过程中向上旋转的组间差异（p  <0.05）。用皮尔森相关性检验了手臂抬高和功能任务期间向上旋转角度和SHR的关联（p  <0.05）。

发现

乳腺癌幸存者的肩cap骨向上旋转减少了，在每个平面中，臂抬高水平较低时，疼痛降低了7.1°（p  = .014至0.049）。这与功能性任务结果不一致，后者在较高的手臂抬高水平上会发生向上旋转递减。手臂抬起期间的向上旋转角度和SHR 与功能任务的值之间总体呈弱到中等的关系（r  = 0.003至0.970，p = .001至0.048）。矢状面抬高期间的手臂抬高表现出肩骨向上旋转，这与功能性任务执行过程中的向上旋转最密切相关。

解释

不一致的关系表明，临床评估应采用基本功能动作进行肩cap骨运动评估，以补充简单的手臂抬高。