So yesterday evening I came home from training and began doing some basic drills on the wooden dummy (mine has a padded steel trunk). I had my headphones in and lost track of time and my pace, I ended up going harder and faster than I intended to but in the end I wasn't any soarer than after a good workout. However this morning when I started typing out a paper I noticed something up with the main knuckle on my middle finger. I have full range of motion and is only as soar as the rest. However the skin on top of the knuckle seems to have disconnected from the knuckle, when I lay my hand flat I can shift it around and feel it sort of sliding over the bone. Again its no soarer than the knuckle on my other hand and it isn't swollen. I've been training on pads, the heavy bag, and wood pole for the better part of a decade and have never experienced this sort of thing before. So I'm just wondering if anyone has had this happen before and if so what it was. I'd rather not spend the money on an x-ray or other scans because my insurance is stretched as is from a run of bad luck in the health department so any enlightenment you can give me would be welcome.