Sorry to hear that. Take it easy, and heal quickly! :o)
As I have said previously I have a balance disorder which causes me some difficulty. I was in rehab, again for this and was making progress until I stepped on some wet leaves and fell. I took the entire fall on the heel of my left hand and it "irritated" my previously torn rotator cuff.
Actually, I am pretty used to this kind of "accident" and am very familiar with the drill.