Haven't had CTS, but have had a cartlidge flushed - I lost the feeling in my last two fingers, right hand, luckily I'm left handed, but it was my banister gripping hand. When I slipped on the stairs for the fourth time I knew it was time to sort it out.

I had a camera stuck in, and the cartlidge repaired, was in bandages for a week and a rigid brace for 3 months. Took some excercises to get it back to form, and it still twinges a bit when I pick up stuff too heavy, but that beats the heck out of falling off banisters and dropping scalding cups of coffee/precious pints of beer.

Good luck with it, and take care. Don't be tempted to push the recovery though, and try and get into the habit of not gripping the guitar so tightly, used to do that in the car, and my steering was getting decidedly dodgy because of it. Got out of that habit whilst at the brace stage and haven't hit a bollard since...

LTS XXX