I discussed 2nd surgery with the surgeon who did my hands & he said that firstly he'd never do 2nd surgery on a hand until at least 2 years had passed as that's the time it takes the hand to fully recover. He also said that 2nd surgery can be less successful as there's often a build up of scar tissue which just presses on the nerve & makes things worse. I've been asked by doctors if I want more surgery but when I say no, they agree with what the surgeon said.
What I do now is wear splints at night & when I type. I take vitamin b6 & bromelain (lots of fresh pineapple) I do exercises too as I've got muscle wasting in my right hand. A simple elastic band has helped build up the muscle again!
Apparently there's a new operation for cts where they wrap a vein or tendon around the median nerve to prevent pressure on it. Don't know exactly how it works but it'll surely be in a website somewhere. Do a search for the cts message board I mentioned. There's quite a few people there have had 2nd & 3rd surgery for cts.
Lidia