Figure 6.

Depiction of foot motion changes occurring owing to stimulation of abductor halluces (AH). The position of the foot segments under load is represented by the grey-shaded image and the stimulated position is represented by the red outlined image. The movements include (a) calcaneal extension and metatarsal flexion in the sagittal plane (b) calcaneal abduction and metatarsal adduction in the axial plane and (c) calcaneal inversion in the frontal plane. This combination of segment movements lead to a reduction in length and an increase in height of the longitudinal arch. (Online version in colour.)