Abstract：
OBJECTIVE: To develop a new tool for identifying joint hypermobility of the paediatric foot and ankle, based on a dichotomous scoring system utilising the Lower Limb Assessment Score (LLAS), to separate the foot and ankle items.
METHODS: A total of 205 children, aged between 5 and 10 years, participated in a cross-sectional study. The new tool Foot and Ankle Flexibility Index (FAFI) was predicated upon the last 7 items of LLAS, which are specific to the foot and ankle. The internal consistency was measured with Cronbach\'s test. Kappa statistics with 95% CI were calculated to verify the level of inter-rater and intra-rater agreement for the FAFI.
RESULTS: Cronbach\'s alpha returned 0.82. The correlations between items returned a mean of 0.59 (range: 0.43-0.74). The discrimination score on the ROC curve (4 points) showed that the model can be used to identify children with joint hypermobility of the foot and ankle. Inter-rater reliability was largely good (ICC = 0.89). Excellent intra-rater reliability was found (ICC = 0.96) CONCLUSIONS: This study identified high reliability between evaluators, and high sensitivity and specificity, for a new reliable and valid tool for the identification of foot and ankle joint hypermobility.
METHODS: A total of 205 children, aged between 5 and 10 years, participated in a cross-sectional study. The new tool Foot and Ankle Flexibility Index (FAFI) was predicated upon the last 7 items of LLAS, which are specific to the foot and ankle. The internal consistency was measured with Cronbach\'s test. Kappa statistics with 95% CI were calculated to verify the level of inter-rater and intra-rater agreement for the FAFI.
RESULTS: Cronbach\'s alpha returned 0.82. The correlations between items returned a mean of 0.59 (range: 0.43-0.74). The discrimination score on the ROC curve (4 points) showed that the model can be used to identify children with joint hypermobility of the foot and ankle. Inter-rater reliability was largely good (ICC = 0.89). Excellent intra-rater reliability was found (ICC = 0.96) CONCLUSIONS: This study identified high reliability between evaluators, and high sensitivity and specificity, for a new reliable and valid tool for the identification of foot and ankle joint hypermobility.
摘要：
目的：开发一种新的工具，用于识别小儿足踝关节过度活动，基于使用下肢评估评分(LLAS)的二分评分系统，把脚和脚踝分开.
方法：总共205名儿童，年龄在5至10岁之间，参加了一项横断面研究。新工具脚部和踝部柔性指数(FAFI)是基于LLAS的最后7个项目，是脚和脚踝特有的。用Cronbach's试验测量内部稠度。计算了具有95%CI的Kappa统计数据，以验证FAFI的评分者之间和评分者之间的一致性水平。
结果：Cronbach\的alpha返回0.82。项目之间的相关性返回平均值为0.59(范围:0.43-0.74)。ROC曲线上的辨别得分(4分)显示该模型可用于辨别足踝关节活动过度的儿童。评分者间的可靠性在很大程度上良好(ICC=0.89)。优秀的评分者内部可靠性被发现（ICC=0.96）结论：这项研究确定了评估者之间的高可靠性，高灵敏度和特异性，一个新的可靠和有效的工具来识别脚和踝关节过度活动。
方法：总共205名儿童，年龄在5至10岁之间，参加了一项横断面研究。新工具脚部和踝部柔性指数(FAFI)是基于LLAS的最后7个项目，是脚和脚踝特有的。用Cronbach's试验测量内部稠度。计算了具有95%CI的Kappa统计数据，以验证FAFI的评分者之间和评分者之间的一致性水平。
结果：Cronbach\的alpha返回0.82。项目之间的相关性返回平均值为0.59(范围:0.43-0.74)。ROC曲线上的辨别得分(4分)显示该模型可用于辨别足踝关节活动过度的儿童。评分者间的可靠性在很大程度上良好(ICC=0.89)。优秀的评分者内部可靠性被发现（ICC=0.96）结论：这项研究确定了评估者之间的高可靠性，高灵敏度和特异性，一个新的可靠和有效的工具来识别脚和踝关节过度活动。
