Movement Analysis Laboratory, Istituto Ortopedico Rizzoli, Bologna, Italy.
Gait Posture. 2011 Jan;33(1):133-5. doi: 10.1016/j.gaitpost.2010.08.013. Epub 2010 Oct 20.
Despite the numerous protocols for multi-segment kinematic analysis of the foot, the literature is scarce regarding relevant measures of reliability. The aim of the present work was to assess the inter-trial, inter-session and inter-examiner variability of one of these protocols by an established method. The kinematics of the joints of the foot of two volunteers were analyzed by four examiners with different degrees of experience in three sessions, two-to-four weeks apart. In each session the data of five trials of level walking were collected and the rotations in the three anatomical planes between foot segments were calculated. The mean value over stance phase duration of the standard deviation of these rotations was calculated for groups of trials according to the statistical method as in Schwartz et al. [6]. For each rotation, the inter-examiner variability was larger than the inter-session, and the latter larger than the inter-trial. The inter-session variability was found in the same order of magnitude for standard lower limb protocols for the two expert examiners, but much higher for the inexperienced examiners.
尽管有多份关于足部多节段运动学分析的协议，但关于相关可靠性测量的文献却很少。本研究的目的是通过一种已建立的方法评估其中一种方案的试验间、试验内和检查者间变异性。通过四名具有不同经验水平的检查者，在三个相隔两到四周的试验内，对两名志愿者的足部关节运动学进行了分析。在每个试验内，采集了五次水平行走试验的数据，并计算了三个解剖平面之间的足段旋转。根据 Schwartz 等人[6]的统计方法，根据试验组计算这些旋转在站立相持续时间内平均值的标准差。对于每个旋转，检查者间变异性大于试验内变异性，后者大于试验间变异性。对于两位有经验的检查者，标准下肢协议的试验内变异性处于相同的数量级，但对于无经验的检查者，变异性要高得多。
