The radiological literature contains little or nothing concerning the x-ray analysis of congenital abnormalities of the feet. Even the larger multivolume texts (1, 2, 3) devote scant space to such a common defect as clubfoot. The trained orthopedic surgeon relies to a great extent on his physical examination of the infant's foot, and has acquired a personal group of radiological criteria which, in conjunction with his clinical knowledge, suffice. Therefore, little in the way of a formal x-ray analysis appears in the orthopedic literature (4, 5). In an attempt to formulate the radiological aspects of the more common abnormalities of the feet and put us on “speaking terms” with our orthopedic associates, the present study was undertaken. The congenital abnormalities of the feet to be presented are: clubfoot (talipes equinovarus), “rocker deformity” (over-corrected clubfoot), flatfoot, metatarsus varus, and pes cavus. The technic for obtaining anteroposterior and lateral roentgenograms must be carefully stan...