Most podiatrists agree that Converse shoes lack the important aspect of the shank. The shank is the supportive structure that's in place between the toe and the heel. Shoes with a more rigid shank are less likely to cause foot pain. Many notable podiatrists, including the spokesperson for the American Podiatric Medical Association, Dr. Leslie Campbell, consider Converse to be little better than a sock because they don't have stability and support. Moreover, they lack shock absorption.