Anatomy of the foot is adapted to keep:
- the statics of the body -
The three dimensions view (graph 1) of the pressure on the foot (Abramson), shows that the foot and the lower leg (shank) muscles are functionally able to withstand standing without pain in the heels, calves and the spinal column;
- the dynamics of the body -
Functions of the foot muscles are:
a) the correction of the foot position during moving on an uneven ground and in the dark until a stable hold is obtained,
b) the role of a main reflection lever.
The foot bones are naturally arranged so that their narrower ends face downwards and their wider ends upwards (graph 2) similar to vaults in civil engineering (bridges).
By such conal composition, two vaults are formed (graph 3) showing schematically - longitudinal vault - from the heel toward toes, and - transversal vault - immediately behind the toes thus forming the system which ascertains amortization and strong hold.
