Injuries and Other Situations

[HJ25]

This post is sort of twofold:

The first, on-topic part of it is: in case of an injury in which the player cannot be moved except by paramedics (and the game is stopped for several minutes), are there any rule s stating whether you continue the game at the same point, or do you do otherwise?

I ask this because a couple of weeks ago (I'm a player) I dislocated my patella during a game (no, it wasn't a pleasant sight.) The game was stopped for 15-20 minutes (possibly more.) I was later told the refs called this "halftime" and resumed the 3rd quarter with 12:37 remaining. (These are FIBA rules, I don't know whether or not this has any bearing.) My question, basically, is, are there any rules anywhere stating that this should happen, either at a "federation" level, or any specific state rules?

My other question is just another, less on-topic one:

I know some of you have had long careers and have officiated thousands of games - you must've seen some pretty big things. What's the worst injury you've seen? Have any of you officiated a game during which a player went into cardiac arrest or something similar? Any big fights? (I'm just curious, I'm sure there are some good stories.)