There is an African American sensei (forgot his name) who devised a falling technique to replace break falls. I have seen it being done and even try to learn it. My daughter learned it too but somehow no one remembers the Sensei's name. (shame). If someone knows to whom I am referring to, please assist. In the meantime, I will do some research. I think the Sensei had a similar problem with his back and hence devised the method. He has video out on that too. Perhaps that would help you now and also when you get more "mature" (old).
"African American"? If you are thinking of Donovan Waite, shame on you - he is one of us, from little ole England