Baropodometry and stereophotogrammetry for classifying flatfoot severity: dynamic angles and footprint indexes

Background Static radiographic angles and other clinical qualitative observations are used traditionally for classifying flatfeet. Correlation of foot shape measurements, taken from pressure footprints under dynamic conditions, with radiographic angles was preliminarily investigated in young flatfeet [1]. The aim of this study is to assess the sensitivity and specificity of existing or purposely defined angles and indexes obtained from both dynamic pressure footprints and multisegment foot kinematics during the stance phase of gait. The main hypothesis is that these thorough measures can account for structural and functional changes in the foot, thus improving flatfoot severity classification.