Bunions can be a real pain in the foot… called Hallux Valgus, the great toe joint becomes inflamed and the bone protrudes out and can continue to grow larger. Usually heredity, the foot over pronates to the inside and ends up pushing off the great toe, the last toe standing. That is the job of the big toe but not over pronating all the way from the heel and arch to toe off. This would be a more flat footed person. Orthotics can help hold up and support the heel and arch of the foot and thereby also affect the pressure and direction of toe off on the big toe, moving it forward on push off, not to the inside.