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Fig. 3 | Pediatric Rheumatology

Fig. 3

From: Pathophysiology of juvenile idiopathic arthritis induced pes planovalgus in static and walking condition—A functional view using 3d gait analysis

Fig. 3

Example of a footprint and the calculation of the Arch Index. The point j and k represent the length of the footprint, excluding the toes. A, B and C represent equal thirds, which are divided by parallel lines perpendicular to the line jk. The arch index is calculated as the ratio of the midfoot area (B) relative to the total area (A + B + C) excluding the toes [19]

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Pediatric Rheumatology

ISSN: 1546-0096