Various extensions of the instrument were designed to crush the ankle, calf, and/or knee in addition to its primary target, the instep.
en.wikipedia.org Shoes of this era, painted black, had an opening down the instep and were secured with straps.
en.wikipedia.org As the years have gone by, some karate schools also practice kicking roundhouse kick with the shin, another point of contact is with the instep (for safety).
en.wikipedia.org The soccer-style placekickers used the instep of the foot while the conventional professional football placekickers kicked straight on with their toes.
en.wikipedia.org Depending on the type of tournament and club, competitors may also wear fist protectors, foot protectors, instep guards, helmets, or mouth guards.
en.wikipedia.org