Hey,
I had a crash several months back after colliding with a rider that was almost stopped. I was doing about 50km/hr and hit the road hard. First point of contact with tarseal? My right elbow. To this day, I cannot lift more than a few kilograms with that arm due to the pain I get in the elbow joint itself. Also if I keep it still for too long it gets very sore.
Just a note to yourself when you are on the trainer, and eventually back on the road - try and move your elbow and shoulder every 5-10 minutes if you can, this will save you from un-needed pain later.