Harry Dean Stanton in Marvel's Avengers, great line, "Son, you've got a condition."
It could be camptodactyly that is twisting my fingers. It could be arthritis. It could be both. I first noticed the radical change in my right ring finger about five years ago. To accompany this, I had a deviated septum (the worst one the surgeon had ever seen, a 90 minute surgery became a 3-4 hour surgery) and I have troubles with the eustachian tubes in my ears and I have a horseshoe kidney. My brother has scoliosis of the spine that twisted his back bones. All of those things seem to accompany camptodactyly.
Then, yesterday I noticed that the outer bones of my right middle finger are warping. That may have begun a year or two ago, I noticed some turning over back then, but I can really see it lately.
I can already do the Bela Lugosi double-jointed Dracula finger bit.
They call this "Christian finger" or European finger, although it may be Indo-European because there is a high incidence of it in India and in Iran.