If a fighter throws a punch and breaks his own arm, what is the ruling?

[IamInuit]

If a fighter before the 4th round lands a power shot which misses completely and dislocates his shoulder or hits an opponent's elbow for example and cannot continue----is it a TKO?

Have you seen Pascal vs Diaconu 1 brock? If not, Pascal dislocated his shoulder about 5 times in that fight and finished and fought rounds against that Romanian Lamotta one -handed. And they kept resetting it. I was cringing in my seat. Had he pulled out it would have been a tko for Adrien.

You know one of Grebs 2 stoppages in 300 fights came as a result of a broken arm against Kid Graves and Harry pulled out the round he broke it in by many accounts. They stopped the fight and Graves got the tko.