I just started working with Dr Joe's teachings and meditation in late February however I know that there is nothing that can not be overcome in the body or external world for that matter. You have to put a lot of intent into really feeling like you already are healed.
I have found coming up with a symbol that represents the healing you are looking for, they often come to me when I'm in deep meditation and just wonder in a detached way about resolving an issue. This past weekend I found a knot of rope symbolizing tight, painful spots in my body when I reached to remove the knots it unwound and fell away along with my pain. I'm not working with it as repairing/replacing damaged tissue.
I hope that helps,