Funnily enough the only hand joint I ever had trouble with was at the base of my right thumb which became noticeable when I tried to knead bread dough. Eventually, after the thing had me almost weeping with the pain at night, a brilliant surgeon performed a trapeziectomy which involved its being wrapped up in a huge bandage for six weeks and pinned to stabilize it. Then when the wrapping came off and the pins came out, there was a hairline scar, now barely visible without a magnifying glass and, after several weeks of intensive physio, I never had a moment's pain. I was so lucky to have that surgeon. Other fingers are fine, so I assume that the arthritic joint was originally caused by either injury or wear and tear from the tennis and squash I used to play.