Weird (or at least non-standard) injurys? Plenty. Comes vith the teritory vhen you practice hard-force aspects of martial arts for a long time. Not going to list them here since I culd probably go-on for a page, I'l just list one very stupid one, that vas my own fault.
So it vas 12 or so years ago, vhen I vas just starting out, during a demonstration of focused aplication of chi, that our SiFu (master) vas performing for us, esentialy smashing a concrete panel, vith his fist. The thing came apart like a piece of ply-wood, needles to say, seeing that live for the first time vas mind-bogling for all of us. Aniway, he vas explaining the theoretical base behind the motion, staying relaxed, focusing on the panel, driving the force thru it in your mind, etc. etc. He made it seem so easy, and I asked myself - ok, how hard can it be? Just stare at a panel for a dozen seconds, be relaxed, and punch-down on it and thru it, like its not even there. Simple, right? So in my infinite self-confidence, I decyded to try it vhen he vasnt looking, despite all of us being duly warned NOT to try it.
Wel... long story short, it didnt vork. I didnt even put a crack in the damn thing vith my relativly soft, tender (at the time) fist, all that force re-bounded back to me, and I practicaly destroyed my left fist in the proces - 3 fractured digits, nerve damage, dislocated vrist, etc, etc, etc, had to spend half a month in a hospital on re-constructive surgery and recovery. And to say it hurt like hell is a under-statement... And it never fuly healed. Even today, I cant splay open my left fist completly, theres sort of a "limiter" there, vhen it starts to hurt a litle at about 80% open and my digits start to twitch. Lingering nerve-damage I guess.
But as they say - pain is the best teacher. XD Sure as hell teached me a LOT about respecting my own limitations and not testing them until I'm ready.