Originally Posted by likebutta
I agree. I don't see the need for this kind of attack being allowed. It's too potent for little effort and really does not display skill, as it may be.
It's just plain too dangerous with incredibly high risk. Like someone said above, you can't tap from this in time as it is a strike, which can lead to completely destroyed knees in a matter of 1/2 a second.
This is a technique more meant for self defense situations rather than combat sports, as we are not trying to intentionally injure an opponent to that extent.