HOLY CRAP! First of all, hope you heal up and that all will be ok,
count your blessings, you were lucky that you are still here to talk about this.
Things happen, but how on the earth could someone mistake a man for an elk, especially at close range using a bow!
Here in Pa guys get shot more during turkey season than any other season, hunters hear turkey sounds and shoot at where the sound is coming from! First of all it must be a bearded bird in the spring, so without actually seeing the bird why would you even attempt to shoot it, unfortunately it may end up being a guy who is calling who gets shot. There may be instances where it is an accident due to circumstances, but IMO anyone that shoots at the sound of a turkey, and ends up shooting a hunter instead, should never be allowed to hunt again period!
Hopefully you will be back to 100% shortly, wishing you all the best.