[Morphofunctional changes in human flatfoot].

The process of the flatfoot formation is accompanied not only by stretching but also by pressing of the plantar ligaments and muscles. In the plantar aponeurosis and ligaments subjected to pressing, adaptive rearrangements are observed; they are accompanied by transformation of the fibrillar connective tissue into cartilaginous one, that rather prevents the ligaments to affect the heigh of the fornix. In the structure of the plantar muscles rather noticeable changes occur, destructive ones including, that is seen in their microscopical picture.