Ankle pronation is characterized as the inward roll of the foot while supination is the outward roll.
Foot rolls inward or outward.
Supination also called underpronation occurs when there is an insufficient inward roll of your foot after the outside of your heel hits the ground.
To see if a person pronates his ankle another person can stand behind him while he is barefoot and look at the ankle and leg.
This causes your foot to receive extra strain and can result in many injuries if not treated or corrected properly.
Overpronation means that your foot rolls inward as you move.
Both conditions usually are caused by heredity or a congenital defect.
Fa renlis 2011 january 26.
Pronation refers to the inward roll of the foot during normal motion and occurs as the outer edge of the heel strikes the ground and the foot rolls inward and flattens out.
This puts a strain on the ankle and can cause the ankle to roll outward which leads to injury.
If you overpronate the outer edge of your heel hits the ground first and then your foot rolls inward onto the arch.
A moderate amount of pronation is required for the foot to function properly however damage and injury can occur during excessive or over pronation.