It's rare to hear that anyone specific does. People don't usually go advertising it. I suggest you ask an MD if you actually want a worthwhile answer; if you just want to hypothesize to yourself, then sure.
I agree. But signs of osteoarthritis of the hands are often visible to everyone that can see a close up of the hands. Two types of bony bumps near your finger joints are common. Bouchard's nodes form on the middle joint of a finger, and Heberden's nodes happen on the joint near your fingertip. These bony bumps can become quite large.
I think genetics is a big risk factor. Also, Joint problems are a risk factor. This includes infections, loose ligaments, overuse, and joints that aren’t aligned the way they should be. Joint problems can be caused by poor practice habits at the piano.
Best to consult a MD as you suggest.