Banned in Judo, yet rising in popularity among Bjj and MMA practitioners, leg locks appear to be a very reliable way to end a fight. My question is, how useful are leg locks in a self defense situation? I could imagine that they could be quite devastating since the set ups of are relatively flexible, and it's fairly easy and quick to destroy a knee or an ankle once applied. Additionally, most people aren't familiar with a leg lock set up, so have no idea its coming when the set up begins. Finally, women can also apply leg locks since they don't require a huge amount of strength to pull off. I suppose my real question would be what is the legal fall out from essentially crippling someone? Additionally if someone is carrying a bladed weapon, you could get sliced up fairly easily. However, if someone is trying to kill you, I guess getting a few slashes is better than ending up 6 feet under.