The numerous synovial joints between the individual tarsal bones mainly invert, evert, supinate, and pronate the foot:
Inversion and eversion is turning the whole sole of the foot inward and outward, respectively.
Pronation is rotating the front of the foot laterally relative to the back of the foot, and supination is the reverse movement.
Pronation and supination allow the foot to maintain normal contact with the ground when in different stances or when standing on irregular surfaces.