I guess I just have been lucky, or inherited good structure in my hands.
The people I work with that have had the surgery were always the ones that were in jobs involving less typing, and were far younger than me.
I'm 53, played piano as a kid, and typed on a MANUAL typewriter for the first 10 years of my career, and spent 40 hours a week on a computer keyboard, and untold hours at home on the computer, no issues. Although some of my coworkers say I really BANG the keys on the computer keyboard, like I am still using a manual typewriter. Maybe that's a reason too.