Gwynne Craig R, Curran Sarah A
Cardiff School of Health Sciences, Llandaff Campus, Cardiff Metropolitan University, Wales, UK.
Int J Sports Phys Ther. 2014 Dec;9(7):898-906.
Clinical assessment of lower limb kinematics during dynamic tasks may identify individuals who demonstrate abnormal movement patterns that may lead to etiology of exacerbation of knee conditions such as patellofemoral joint (PFJt) pain.
The purpose of this study was to determine the reliability, validity and associated measurement error of a clinically appropriate two-dimensional (2-D) procedure of quantifying frontal plane knee alignment during single limb squats.
Nine female and nine male recreationally active subjects with no history of PFJt pain had frontal plane limb alignment assessed using three-dimensional (3-D) motion analysis and digital video cameras (2-D analysis) while performing single limb squats. The association between 2-D and 3-D measures was quantified using Pearson's product correlation coefficients. Intraclass correlation coefficients (ICCs) were determined for within- and between-session reliability of 2-D data and standard error of measurement (SEM) was used to establish measurement error.
Frontal plane limb alignment assessed with 2-D analysis demonstrated good correlation compared with 3-D methods (r = 0.64 to 0.78, p < 0.001). Within-session (0.86) and between-session ICCs (0.74) demonstrated good reliability for 2-D measures and SEM scores ranged from 2° to 4°.
2-D measures have good consistency and may provide a valid measure of lower limb alignment when compared to existing 3-D methods.
Assessment of lower limb kinematics using 2-D methods may be an accurate and clinically useful alternative to 3-D motion analysis when identifying individuals who demonstrate abnormal movement patterns associated with PFJt pain.
2b.
在动态任务中对下肢运动学进行临床评估，可能会识别出表现出异常运动模式的个体，这些异常运动模式可能导致诸如髌股关节（PFJt）疼痛等膝关节疾病加重的病因。
本研究的目的是确定一种临床上适用的二维（2-D）程序在单腿深蹲过程中量化额状面膝关节对线的可靠性、有效性和相关测量误差。
9名无PFJt疼痛病史的女性和9名男性休闲活动受试者在进行单腿深蹲时，使用三维（3-D）运动分析和数字摄像机（2-D分析）评估额状面肢体对线。使用Pearson积差相关系数量化2-D和3-D测量之间的关联。确定2-D数据的组内和组间可靠性的组内相关系数（ICC），并使用测量标准误（SEM）来确定测量误差。
与3-D方法相比，2-D分析评估的额状面肢体对线显示出良好的相关性（r = 0.64至0.78，p < 0.001）。2-D测量的组内ICC（0.86）和组间ICC（0.74）显示出良好的可靠性，SEM分数范围为2°至4°。
与现有的3-D方法相比，2-D测量具有良好的一致性，并且可以提供下肢对线的有效测量。
当识别出表现出与PFJt疼痛相关的异常运动模式的个体时，使用2-D方法评估下肢运动学可能是3-D运动分析的一种准确且临床上有用的替代方法。
2b。
