I, too, have a similar problem. The chiropractor said my wrist is really loose, and it hurts like crazy whenever I try to do anything that bends my hand backwards like headstands, planks, planche attempts, etc. I keep thinking it's getting better, try some planche work or something, and it starts hurting like crazy. I go to the chiropracter and he asks me if I've fallen and caught myself with my hand, or what, because it's so loose and it's not healing.
Does someone maybe have exercises for us to tighten the wrists?