Fig. 2

Representative plantar pressure map during a single stance phase. The coloured box overlays demarcate the complete pressure map into multiple plantar regions used for calculating pressure outcomes. Red dashed line between the heel centroid and second toe delineates the midline of the foot. White crosses (+) denote the trajectory of the centre of pressure (CoP) throughout stance phase. Green dashed lines demonstrate how the time-series medial-lateral pressure index is calculated as the distance between the CoP and the foot midline (normalized to foot width). Positive and negative MLPI indicate a CoP that is lateral and medial to the foot midline, respectively