Hiji Kansetsu means elbow joint. The question is what is the range of motion - and once you know this the next step is to manipulate this range.
Attack the joint with long term pressure or simply by striking.
applications of hiji kansetsu
attack the joint to break it
It's like Yokoyama Kancho said: "You don't want to spend too much time with your opponent".
manipulate the joint to control your opponent
There's always a scale from 0 to 100. 100 would be to peak your force in the shortest amount of time to break a bone or joint. In this case it's more like an ongoing pressure of 50: manipulate and control.
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