If I may paraphrase what I think you posted, you believe that the pre-fab orthotics you wore caused you to develop damage to your feet. I posted back, that in order to prove that, double blinded studies would have to be done with an outcome that showed that pre-fab orthotics did or did not cause damage to individuals feet. Truthfully, I can not imagine how that could be studied. I did not indicate however that no studies have been done on pre-fab orthotics in general however. There is a difference.
It might be a good idea for you to get another opinion about your feet from another doctor for further clarification.