Eeeekkkk. That had to hurt, Cali
I had a similar (no broken skin though) situation. I once broke with a roundhouse, like you. I was aiming with the ball of my foot, but missed and hit the board with my instep on the edge of the board. %$#@!! That hurt LOL. My foot was purple for two weeks. But I did break the board and not my foot, thank goodness.
Another breaking "mistake" I made was listening (or getting dared) by a black belt. We were doing a breaking clinic. I did a speed punch, jump front kick, front leg suspended hook kick break, and a lot of neat breaks (showing off basically).
Anyways, he (the black belt) asked me to do a jumping axe kick. I said ok, that's easy enough. But he held the board way too high (he was standing on a chair). I told him it was too high. He told me that I could do it. He said, "You came from another style, you can do it. I dare you." I was a yellow belt at this school at the time. I just couldn't say no to this dare. I thought I'd feel like an @ss if I turned down a black belt with an easy break, so I went for it. I shook my head, and thought this is going to !@#$ing hurt. It did
I jumped up as high as I could, stretched my leg as far .... wait, past it's range of motion, and tore my hammy in mid air. I broke the board. My leg hurt so bad, but I could still stand and walk. I ended up feeling like an @ss anyway LOL
BUT I played it off long enough to do on more break. With the same leg that I just hurt, I broke two boards with a side kick. That REALLY made my leg hurt. I dropped to the floor in pain thinking to myself, "You are an idiot for doing that."
It took 5 months for it to fully recover
I had various broken fingers and minor sprains in sparring, but nothing major. I hurt my knee also, but that was another "showing off" injury
:shrug:
The most recent one was during throws/grappling class. I was going to do a hip throw on someone that out weighted me by 30 pounds. I didn't get under his center of gravity enough, so I ended up using more muscle that I really had to. I hurt my lower back and left hip. I'm going to see a doc for that soon (sports doc).