Robert Isaacs and I had the pleasure of spending last weekend working with a group of students studying for their masters degrees in biomechanics in Portugal. I think I can speak for both of us when I say that we were extremely impressed by their enthusiasm for the subject and their willingness to learn. One of the most interesting things that struck Robert and I was one of their methods of custom foot orthosis production in which the orthotic shell was formed directly over the outside of the negative cast (making it the positive surface!).
Excerpt from:
Podiatric biomechanics in Portugal