Tension on Plantar Fascia

When the great toe dorsiflexes, tension is placed on the plantar fascia which increases the arch height, making the midfoot more rigid. This is called the windlass mechanism and this function helps to propel the body forward more efficiently when walking. When the plantar fascia is overstressed, it tears and inflames and becomes painful. This condition is called plantar fasciitis and can slowly progress to a more chronic condition called plantar fasciosis when left untreated.