Platform shoes are shoes, boots, or sandals with an obvious thick sole, usually in the range of 3–10 cm (1–4 in). Platform shoes may also be high heels, in which case the heel is raised significantly higher than the ball of the foot. Extreme heights, of both the sole and heel, can be found in fetish footwear such as ballet boots, where the sole may be up to 20 cm (8 in) high, and the heels up to 40 cm (16 in) and more. The sole of a platform shoe can have a continuous uniform thickness, have a wedge, a separate block or a stiletto heel. Apart from the extreme forms of fetish shoes (which are first and foremost not intended for walking in), walking in platform shoes can be cumbersome and clumsy. Raising the ankle increases the risk of a sprained ankle.
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