Danger Easy Injury
Well this target is the favorite of most Martial Artists as it is fully incapacitating. However, it is dangerous to practice as well as use in a real self defense situation.
As this causes observable damage, possibly permanent, your crippled assailant will be able to take legal action against you in these modern days. In today's society it is far better to use this target/s in grappling situations as opposed to striking methodologies.
There are 6 targets and trajectories on this anatomical structure that will surprise, weaken or disable an opponent, with just as many trajectories for attack, each with it's specific path of attack.
Each of these targets makes weakens the entire leg structure and cause the body to collapse under it's own weight, or in grappling, unbalance the opponents control.
To learn the method, targets and see the affect in real time, the extended films are located at these links: