Here, the experts identify the problems caused by teenagers' shoe choice.

　　KEDS/VANS

　　Slip­on shoes with elastic(有弹性的)sides are particularly popular among teenage boys—with Keds and Vans the most sought­after brands.

　　The main problem is that they are just too flat—so flat that the heel, which strikes the ground first, also becomes damaged and painful.

　　BALLET PUMPS

　　The worst shoes of all are such light and thin dolly shoes. The problem is partly their flatness, as with Keds and Vans. However ballet pumps, which have no string or heel, have other specific problems.

　　“As the shoe has no fastening device, it relies on the toes to keep the shoe on, causing an awkward gait(步法); this leads to short and long­term problems such as calluses(茧子), heel and knee pain.”

　　WEDGES AND STILETTOS

　　These shoes can also cause problems with gait. They may look good, but the heels on these are so high that they can force the wearer's body weight forward, making them very unstable.

　　Teens who wear these shoes regularly are also in danger of joining those millions of women with constant back pain.

　　SCHOOL SHOES

　　So what do podiatrists(足科医生)have on their wish list, especially for everyday wear?

　　Something in a natural, breathable fabric, with a string to hold it on, with a small heel and a deep toe­box that does not press the toes, such as Clark's, Marks & Spencer or Rhino.

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