Hi Braumster! I too will be having surgery soon, not the same though. However, in your case it might me optional, depending on how bad it is. Though it is suggestive that you have it done to take away the pain, imagine waking up everyday to a painful hand, doesn't sound very fun does it?
All I can say is that there are many many many great surgeons out there and will do their best to make you better and you will surely have a pain free life afterwards. If you do have surgery think of the benefits; not having to do the dishes for a couple weeks, not having to do daily chores that someone else can do, people serving you when you need it- sounds like a perfect mischievous thing to take advantage of if you have any siblings you dislike, aye? xD
Just put it this way, you'll be asleep through the whole thing and your family will be waiting for you when you return from the surgery, everything will be alright, you'll be in great hands. I'm sure your parents wouldn't make you have surgery if they know something bad was going to happen~
If you want any advise, feel free to send me a PM, we both could use this time to support each other for our surgeries. When my mum had her surgery they wold her to keep her eyes open, she blinked and she was gone, just like that then a few seconds later she was in recovery! ^^
There's nothing to worry about~