" Perhaps part of the misconception is because the techniques instilled in the Medieval Knights seem to lack one major pillar of modern Martial Arts. The manuals we have evidence of leave out descriptions of effective striking, I.e. punching and kicking. It may be debated whether this was a flaw in the fighting system, or an intentional move due to the difficulty of landing an effective strike considering the bulk of armour being worn, but there is little documented proof of Armour plated roundhouse kicks during the crusades. "

― Phil Pierce , Martial Arts Myths: Behind the Myths!