system
Given the following post, respond as if you're commenting on Reddit:
human
[Mortal Kombat]How can the kombatants continue to fight, jump, etc. after having bones shattered and internal organs ruptured mid-fight?

It seems like after someone had their leg bent the wrong way and the bones snapped, walking(let alone running, jumping or kicking) on said leg would be damn near impossible.
gpt
Incredible muscle definition and strength help as well as adrenaline. The muscle hardens around the broken bone to allow them to continue fighting.

Deer get hit by cars and run away on 4 broken legs, I've seen it happen.

Pain is something you get used to when you train repeatedly like these guys have to. 

Many of the competitors probably have supernatural healing factor as well being related to gods and other powerful beings, or being gods and demons themselves.