The A QUAD Foot-Type is commonly thought of as an over-supinated or severe Pes Cavus foot, which means that the foot is rolling out too much. In layman’s terms if you have a very high arch or high instep you could have this foot-type. Other conditions that are associated with this foot-type are hammer toes and even bunions, this is because the toes tend to pull back or become clawed, particularly with age, and corns on the toes can develop from rubbing and pressure from footwear that doesn’t allow enough room for the hammer toes or doesn’t fit correctly. Because this foot tends to roll out more than it should someone with this foot-type is very prone to ankle sprains, and anyone with a history of ankle sprains is probably going to be either the A or C foot-type.