5. Lateral Arch
FDI has catered for the medial and lateral longitudinal arches of the foot. We have contoured a lateral arch support into the orthotic which we believe is important in aiding locking of the midtarsal joint, in gait, to allow re-supination to occur for propulsion.
A lateral arch will help the following:
Lock the calcaneo-cuboid joint to foster supination to occur at midstance.
Facilitate peroneus longus contraction required for the locking mechanism of the midfoot to occur.