I snapped my radius and ulna about 10 years ago now, no bones poking through the skin but the doctors figure that one out... stretchy skin they put it down to i had two plates and twelve screws put in there to hold it all together during the healing process for the same reason as you. It took me about 3 months to get back to riding XC and very light DH (i didn't ride trials at the time) and about 6 months before i could really go for it on the DH bike. The bad news is that i still have a lot of issues with it, i had a plate removed after 4 years as it was rubbing on my ulna never and the surrounding muscles, hoping this would solve the pins and needles, numbness and pain i was getting. Unfortunately it didn't, the never is still damaged, i still get a lot of pain in the first 3 fingers of my hand and the numbness is annoying as it can cause you to lose grip on the bars and the most impromptu moments. Take your recovery easy, find some decent physio to do as the range of movement in my elbow and wrist joint to ages to get back to normal and hopefully all will be ok. I guess i was just unlucky!