This monograph begins with a significant introduction on the gravitational environment and podiatric biomechanics, indispensable for an accurate understanding of antigravitational mechanics of the foot. However, what is original and justifies this work, is the precise and detailed exposition of podiatric biomechanics and pathomechanics, essential notions in the planning of efficient and reliable orthoses. The originality of certain interpretations and unusual terminology, can inspire doubts and understandable questions, considering the original layout of the subject, doubts which are annulled by careful reading. The text is nonetheless able to offer a valid point of reference to those that confront the problems of the planning of podiatric orthoses, to students and physicians prescribing orthoses.