Dr. William Knudson is an Iowa native who serves patients from his Leesville, Virginia office. Through Podiatric Care of Northern Virginia, Dr. William Knudson regularly sees patients complaining of foot pain and discomfort. One of the primary causes of foot pain, Dr. William Knudson explains, is fallen arches. Today he talks to the staff of Presentation Solutions about the causes of fallen arches, what can be done to prevent them, and what he does to treat them.