From what i have read these are some of the symptoms :
Limited ability to open the mouth very wide
Jaws that get "stuck" or "lock" in the open- or closed-mouth position
Clicking, popping, or grating sounds in the jaw joint when opening or closing the mouth (which may or may not be accompanied by pain) or chewing.
I have these very same things going on, I play my trumpets with no problem, as the only movement I feel is in the upper neck muscles and some below the chin. I grasp my trumpets on the left side of my mouth, not in the middle, loosely drawing in air, so this would restrict any movement in the joint of the jaw bone and decrease the pressure applied to the disc between the temporal bone and the mandible. So I would guess you could play a trumpet or a wing bone caller, just practice playing from the side of the mouth.