I know its an odd question... but I've lost a decent amount of weight and my rings have been getting loose so I've been playing with them a lot. On my left hand I can fit my wedding band and engagement ring on my middle finger and my thumb. But on my right hand, I can still fit those same rings on my middle finger but not as well and not on my thumb at all.. So I started comparing my thumbs together. My right thumb doesn't look any bigger over all but the joint looks a little bit bigger... I suppose it could be normal? But I also know that I fractured that thumb at one point around the joint so maybe that's why it's a little bit bigger? But still, my middle finger on my right hand is also a little tiny bit bigger, and now that I think about it so is my ring finger.. not a whole lot bit a little bit but not the joints themselves.. so idk maybe I'm just weird.