Shooting low wrist, I don't get full extension in my elbow. It keeps a natural, soft bend when I'm shooting. If I used high wrist, straight elbow, perfect "T" form and really stretched into the shot, I'd have a 35" draw length! It's bad enough at 33". I don't want a longer draw.
But I've seen some guys shooting with their elbows bent dang near 90 degrees. I guess that's what you've got to do when you're shooting one of those P.O.S. bows with a 6" brace height. (You wanted to know where the bent elbow came from. That's it!)
What I could never figure out - What's the point in bending the elbow so much they're giving up at least 2" of draw length in order to shoot a low brace bow? They'd be just as well off to straighten that elbow out to their natural draw length and shoot a bow with an 8" brace.
But, these days, common sense rarely has as much to do with equipment selection as IBO speed ratings do. [:-]