Flexible, flat feet commonly cause this condition. Flat feet may be hereditary or caused by obesity or pregnancy. This type of foot usually does not pronate enough. Because the arch does not flatten, it is not an effective shock absorber. As a result, the weight of the body falls only on the heel and bases of the toe, increasing stress on the foot.
Excessive supination can also lead to pain in the knees, hips and lower back.
High arches are the most common cause of this condition. High arched feet tend to be hereditary. Orthotics with good longitudinal arch support will bring the ground into even contact with the rest of the foot, allowing the entire foot to support the weight of the body. A cushioning top cover material is also important in that it will absorb shock and provide comfort and protection. If you have a legitimate foot abnormality, orthotics can indeed help with the above conditions.