which is worse for a bad knee?

[Charlitos1988]

-kick heavy bag (muay thai style)
-receive a leg kick on the
side of the knee (muay thai style)
-receive a stomp on the back of the knee (self defense oriented)

 

[Midnighter]

Arrow to the knee.

 

[ghostwipe]

Atomic Knee Drop

 

[Paradigm]

kneebar

 

[Nuclearlandmine]

Heelhook, preferably from Paul Harris

 

[sourdiesel209]

Baseball bat to the knee cap

 

[Im so Moldy]

-receive a stomp on the back of the knee (self defense oriented)

This doesn't even do anything. You're moving the knee within its ROM, and besides, you're pretty much never gonna be in a position to do it in a real fight.

 

[Phlog]

Ice hockey.

 

[KounterPunch]

a .44 magnum ?

a hatchet ?

a table saw ?

a Dr. Evil style laser ?

 

[Phlog]

Knee cancer for the win.