Cavanagh P R, Rodgers M M
J Biomech. 1987;20(5):547-51. doi: 10.1016/0021-9290(87)90255-7.
Previous methods of measuring footprints for the purpose of classifying foot type are reviewed. A planimetric method is presented for characterizing footprints using the ratio of the area of the middle third of the footprint to the entire footprint area (excluding the toes). This 'arch index' during 50% body weight standing provides an objective measure for comparative purposes with a measured reliability, within day and between day, of 0.96 and 0.94 respectively. Values measured from footprints taken during other activities show variable responses in different subjects. Examples of the arch index taken from static footprints of various feet are presented and data are reported from 107 randomly selected subjects during half body weight stance. Criteria are suggested for the classification of footprints as high, normal, and flat arch.
回顾了以往为对足型进行分类而测量脚印的方法。提出了一种平面测量法，通过脚印中间三分之一区域的面积与整个脚印面积（不包括脚趾）的比值来表征脚印。在50%体重站立时的这种“足弓指数”提供了一种客观测量方法，用于比较目的，其日内和日间测量可靠性分别为0.96和0.94。在其他活动中获取的脚印测量值在不同受试者中显示出不同的反应。给出了从各种足部的静态脚印中获取的足弓指数示例，并报告了107名随机选择的受试者在半体重站立姿势下的数据。建议了将脚印分类为高弓、正常足弓和平足弓的标准。
