Ninety percent of us are born with some degree of bowleggedness. For most of us that also means that we have at least one foot that over pronates, meaning that the foot rolls toward the big toe on walking. Many of the rest of us walk on the out side of the foot and are know as supinators.
To find out if you are an over pronator, check the heels of your shoes. If you over pronate, your shoes will wear unevenly with more wear and tear on the outside of the heel. This over-pronation leads to numerous foot pains such as plantar fasciitis.
With over-pronation the heel rolls with every step, placing uneven gaping on the ankle. Overuse syndrome ensues and voila you have ankle pain. As the ankle is a miter joint the gaping only worsens with extra weight and use, such as walking or running.
Of course standing on concrete all day is not good either. I can't tell you how many people have come in with ankle pain over the years and what they needed was a good NEW pair of shoes with a secure toe box and a good heel cup. These people tell me how good their shoes look on the outside and they do. But... the inside is worn out where they have been standing on concrete 8 hours a day.