Wizzer, do you use aero bars?
I've have ulnar compression problems definitely stemming from compression in the elbow (I won't describe the tests, yeow). I find that aero bars are a problem or anything that keeps my elbows bent around 90 degrees. For typing and driving, I keep my keyboard (and mouse) and steering wheel out away from me in what most people would consider a non-ergonomically correct position, but it works for me.
Once I knew about the problem, I could avoid those positions and haven't had a problem since. Aero bars I use for short TTs and a bit of training. Otherwise, I stay way away.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.