Check out the Giant OCR bikes. They are much easier to dial in for fitting.

I also have hand injuries (professional musician) and had problems with numbness on my comfort bike. After I rode my new OCR2 for a few days, I had pain in my back and hands. Took it back to the shop. They raised the bars and brought the levers up and closer. Also rewrapped the bar with thick cork tape on the bottom layer. They are holding foam to put on the bottom if the grip still hurts me. I have arthritis in my neck and tailbone - big time (I live on Vioxx). I am not having any problems after the changes were made at the shop. Oh, I forgot, they also put on a narrow handlebar and female specific seat at the time of purchase.

I looked at alot of other road bikes before I bought the OCR2. None of them were as comfortable as the Giant. I'm not having problems with pain in the back, hands or arms since the adjustments.

Important info that was offered earlier: stem height needs to be adjusted; width of the handlebars (they should not be much wider than your shoulders) and position of the levers (so that you are not over-reaching) must be considered. Good luck!