Fig. 2

Seven foot features of the three-dimensional (3D) foot-scanning system. a Instep height (IH) and navicular height (NH). b Transverse arch height (TAH) and transverse arch width (TAW). c Great toe–first metatarsal head–heel (GFH) angle, fifth toe–fifth metatarsal head–heel (FFH) angle, and distance from the center line between the heel and the second-toe tip when the coordinate point of the talus head is projected onto the floor (ABD)