New to people currently alive.
Only if the environment and the technology changes. Human joints haven't changed in at least 200,000 years. I guarantee with 100% certainty that humans have been grappling for the entire time. And the body hasn't changed in the intervening milenia. Anything we know now about bending or breaking the body (as opposed to putting it back together again), was recognized a LOOOONG time back. If we don't currently know something about how to bend and break the human body using bare hands in a wrestling event, then it's because we've forgotten it, probably because of social norms and rules associated with sportive events.
It is utterly and completely ludicrous to believe that in the last 199,950 years no one figured out how to torque a joint in just that specific way, but, magically, because we're SOOO much smarter than the previous 10,000 generations, we've only just now figured out a 10 degree angle difference or to pull the body in tighter here. This isn't mechanical propulsion of horses to jets here; this is the human body, which hasn't changed at all.
Peace favor your sword,
Kirk