Correlating foot posture with foot mobility using a high-accuracy foot measurement system

The Foot Posture Index (FPI) has in recent years become one of the most useful foot posture assessment tools due to its proven high reliability and validity. The main advantage of the FPI over other foot posture assessment techniques is the ability to provide a multi-segment analysis of the foot from six different foot components. The FPI is yet to be assessed for reliability against dynamic foot mobility and posture measures based on the dorsum of the foot as a point of reference. Therefore, this study utilized a developed dynamic 3D measurement system to determine the relationship between the FPI scores with the dynamic Foot Mobility Magnitude (FMM) measures. From the study, it was found that there was no significant correlation between the FPI scores of foot posture and the dynamic behavior of the foot, indicating that the only way to assess foot mobility is through dynamic image-based measurements.