http://www.combatfitness.com

Nicholas Carter Muay Thai Trainer at combatfitness.com demonstrates side knee technique.
This simple technique is good way to throw knees without choreographing as is often done with the double-hand-neck-grab. There are many ways and angles to throw a knee so the point here is just to show that a fighter does not always have to do the standard knee and grab as seen commonly in mma.
To execute this technique simply use an outside step while throwing the knee. If standing face to face, step to your left just outside of opponent to throw the right knee. Step with your right foot to outside of opponent and throw left knee