Hope for the best, prepare for the worst.
I don't want to put a downer on this, but I am sure this has all already gone through your mind.
When I was your age an injury of the scale of yours would probably have resulted in an amputation. (And yes, the brutal reality is that, with the infection, it might yet
)
One of the things that really ****** me off about the current criminal justice system is how nowadays people who carry out brutal life threatening and/or even "lethal" assaults manage to get away with far lighter charges simply because their victims happened to have good doctors!
IE because victims can make good, even complete, recoveries from vicious assaults that might well have killed them even only 25 years ago. Perps end up getting away with facing charges that in no way represent their intent or deed!
There really should be a re-evaluation as to how the law in modern societies deals with situations like this.
(It is
sort of happening, but unsurprisingly, since the Government and Lawyers are involved, they are making a complete Horlicks of it!
)
Good Luck!