Mixed martial arts is essentially a sport in which fighters of any martial discipline, such as boxing, karate, jiu jitsu, wrestling and judo compete under rules that allow kicking, punching and grappling techniques, both stand-up and on the ground.
Kicks/knees/stomps to the head of a grounded opponent While it is perfectly okay to kick or knee the opponent's head while standing, it is illegal to do it when the opponent is on the ground. If a fighter kicks or knees a grounded opponent, it will almost certainly result in a point deduction or even disqualification.
Can You Kick the Knee in MMA? 'Knee stomping', also known as an oblique kick, is currently legal in the UFC, though. This is where a fighter hits part of their opponent's thigh just above the knee, which could hyperextend it and cause anterior cruciate and medical collateral ligament damage.Nov 11, 2020