Dislocated (and put back) shoulders - the putting back one didn't just wake me up as I moved and clearly relaxed for the first time in a couple of days, it woke my then very new DP and two cats because 'it sounded like a gun had gone off in the bedroom', apparently.
Lots of mystery bruises on hands, arms, legs.
Excruciatingly painful neck - using a shaped pillow from IKEA stopped those along with doing some physio exercises to strengthen my neck (face down, try to lift arms, then arms individually, then head; very difficult at first, but once I'd increased strength and slept on the funny pillow for a while, I didn't start the day with an awful migraine anymore).
Black eye from having the great idea of moving the lamp above me and then knocking it down somehow overnight.
Few scratches to the face where one of the cats got frightened by something and ran up the bed once, then another time, one decided to try sleeping above the bed and fell off.
My worst one was being stamped in the head when DP had fallen asleep straight from a month of long shifts and too much Monster, in a weird position so I'd had to fit myself on the bed the wrong way round - by some miracle, I'd just moved a few seconds before he'd started dreaming so that he got my forehead instead of the bridge and tip of my nose. He wouldn't or couldn't wake up even with me shouting and shaking him - so when he opened his eyes in the morning after a lovely refreshing night's sleep, the first thing he saw was my face and the second was his life flashing before his eyes as I told him what had happened over the next twenty minutes or so.
After that, he finally started listening to my so called unreasonable 'no shoes upstairs and workboots at the very least come off the moment you walk in the front door' as he'd fallen asleep with a pair of steel toe caps on. Just as well it was only the cushioned heel and not the steel bit, really.
Oh, and he stopped drinking 4-6 Monsters a day - he foolishly thought about complaining that he had a headache from the caffeine withdrawals three days in, but The Look he got with a 'Oh, you have a headache, do you?' as the huge blue bruise spread across my forehead made him realise that this was not a time to mention anything less serious than an accidental limb amputation - and even then, it would have had to be a whole leg, as I really wouldn't have been that bothered if it were only from his knee down (unless perhaps there were also a horde of zombies coming up the stairs after setting the kitchen on fire).
Risky business, this sleeping, sometimes.