When you have nearly any kind of surgery or procedure, the best metric immediately at hand to determine the likelihood of a successful medical result is:
What volume of a procedure do they do annually?
It is simply common sense: A place that does a huge number of hip replacements a year will see variants of anatomy, surgical procedures, and dangerous complications that a smaller community hospital doing far fewer would ever see.
It isn't bulletproof, but if I had to make a snap decision with one easily derived metric, that is the metric I would ask to see.
When it is an emergency one doesn’t have the lyxury of checking. You get what you get