Intra-Rater Reliability of Measurement of Cervical Range of Motion Using an Ultrasound-Based Motion Analysis System

三度空間超音波感應動作分析系統測量頸部活動之信度

王淑芬(Shwu-Fen Wang) ； 鄧金枝(Chin-Chih Teng) ； 柴惠敏(Huei-Ming Chai)

《物理治療》 28卷4期 (2003/08) Pp. 181-188

摘要

目的：由於頸部關節活動的複雜，及缺少清楚的骨骼定位點，臨床頸部關節活動的測量仍為一有待解決之課題。超音波三度空間的動作分析系統(Zebris)可以提供頸部動作時的動態測量。本篇研究之目的，在測量使用超音波三度空間的動作分析系統之同日及不同日再測可信度作為日後使用此系統作臨床測量之參考。方法：20位受試者參與同日再測試，另外28位受試者在不同日再測試，測試項目包括受試者自覺舒適的速度，做最大角度的前屈、後仰、左右旋轉、及左右側彎。以級內相關係數((ICC(3,1))測量再測信度，並計算測量標準誤差(standard error of measurement; SEM)。結果：Zebris之同日再測信度在主要動作方向之ICC為0.85-0.95，在優良之範圍。SEM在2.2-4.2度之範圍。不同日再測信度在主要動作方向之ICC為0.58-0.88，在優良及尚可之範圍。SEM在4.1-15.9度之範圍。結論：超音波三度空間的動作分析系統，在頸部主要動作方向，於同日測量頸部最大活動度，具優良之信度。於不同日測量時，除前屈及左側彎方向外，其餘之後仰、左右旋轉、及右側彎方向測量，亦具優良之信度。本實驗並提供此系統在測量三度空間角度上的測量誤差範圍，可作為日後使用此儀器作測量之參考。

關鍵字

動作分析 ； 頸部關節測量 ； 信度

並列摘要

Purposes: Measurement of cervical motions is essential for patients with cervical dysfunction, either for determining the severity of the problem or for assessing the progress of treatment. Although several methods with good reliability have been used clinically, most of them are static in nature. The reliability of dynamic measurement for cervical motions has seldom been reported. This study examined the reliability of an ultrasound-based Zebris motion analysis system with head and shoulder attachments for measurement of dynamic cervical motions in healthy adults. Method: To test the intra-session reliability of the measurement, 20 healthy young adults were tested for the range of cervical motions in the principal planes twice on the same day at an interval of 5 to 10 minutes using an ultrasound-based Zebris motion analysis system. For testing inter-session reliability, another 28 healthy young individuals were tested twice within one to two weeks. The cervical motion was defined as the relative motion of the head with respect to the right shoulder. The test protocol consisted of performing cervical movements at a self-determined speed in six directions in three cardinal planes, i.e. flexion/extension, left/ rightward rotation, and left/rightward side-bending. Intra-class correlation coefficients (ICC 3,1) and standard errors of measurement (SEM) were calculated. Results: The ICC values of the intra-session reliability of the six principal cervical motions ranged between 0.85 and 0.95. The SEM of the intra session testing ranged from 2.2° to 4.2°. The inter-session reliability ranged from 0.75 to 0.88 for cervical extension, left/rightward rotation, and rightward side-bending, and was 0.64 for cervical flexion and 0.58 for leftward side-bending. The SEM for the inter session testing ranged from 4.1° to 15.9°. Conclusion: Excellent reproducibility is obtained when cervical range of motion in three cardinal planes were measured by a physical therapist on the same day using an ultrasound-based Zebris motion analysis system while using the shoulder attachment as the reference plane. The inter-session reliabilities in all directions except for cervical flexion and leftward sidebending were excellent.

並列關鍵字

Motion analysis ； Range of cervical motion