Table 1.

Boundaries for the inclusion into foot posture groups

Foot posture measurement	Normal	Pes planus	Pes cavus
FPI	+ 1 to + 7	> + 7	< + 1
Arch Index	0.11 to 0.25	>  0.25	<  0.11
Normalised navicular height truncated	0.31 to 0.22	<  0.22	>  0.31