Baropodometry and stereophotogrammetry for classifying flatfoot severity: dynamic angles and footprint indexes
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KeywordsStance Phase Motion System Qualitative Observation Severity Classification Shape Measurement
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 . 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.
Materials and methods
Sensitivity and specificity will be more thoroughly estimated on the whole dataset of the 60 examined individuals. Preliminarily, SMA and RMFW seem to be the most appropriate dynamic footprint indexes for classifying flatfeet. MLA angle at midstance seems to be specific for F2 only, accounting for significant structural changes with respect to C and F1. MLA angle ROM might help to distinguish, within the same pathologic group, between flexible and rigid flatfoot.
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