The knee is one of the most dangerous weapons in Muay Thai. The Knee is medium-range weapon. It can be used while clinching or free standing and to strike down many different targets. The power of the knee can quickly wear down a fighter's stamina with just a few strikes and open him up for a knockout.

The knees can be used to attack your opponent's legs, hips, abdomen, floating ribs, chest and head. They can be thrust straight inwards or curved in from the side. The deadly flying knee is one of the strongest techniques a fighter can use.