vertical talus, also known as congenital of the "rocking chair" flat feet, also called congenital convex foot eversion, and its etiology has not clear, but often with a variety of congenital malformations and a variety of neuromuscular disorders are associated. ogata and schoenecker will be divided into three categories (idiopathic, genetic / syndromic, neuromuscular-type); hamanshi will be divided into five types (neural tube defects, neuromuscular disorders, malformation syndrome, chromosomal aberrations, idiopathic). the incidence of very low vertical talus, estimated at only 1 / 10000? 1 / 20000, male to female ratio of about 1: 1.
vertical talus diagnostic methods: typical performance of vertical talus deformity at birth infestation full arch collapse, foot rocking chair was like, protruding to the inside of the middle foot, outside foot turn. x-ray shows the vertical position of talus, calcaneus in a horseshoe position. 3 years ago, generally on the lateral axis with the distance between the angle as a reference (vanderwilde other of normal for 25 ° ~ 55 °), to hamanishi in 1984 described tamba - the axis of the talus - the first metatarsal base department of angle (normal 3.3 ° ± 6.4 °), and camba - that is, calcaneal axis - the base of the first metatarsal angle (normal -9 ° ± 4.5 °) as the primary basis for the diagnosis and evaluation criteria.
oblique talus: the angle from the vertical talus etiology is similar, both have a common genetic inheritance. harris proposed oblique talus as a disease diagnosis is necessary because it produces the appearance of the abnormal state sector in a serious, soft and vertical position of the flat foot between the talus. with a completely normal x-ray performance of infants and young children is not difficult to identify the position of flat feet, and vertical talus with the biggest difference is that it is indeed talonavicular joint can be refolded "subluxation", that is passive plantar flexion of the forefoot talonavicular joint can be reset. hamanishi tamba and camba provides 20 years of measurements have been accepted by many scholars, according to his measure defined oblique and vertical talus talus is the intersection between the tamba; 60 °, camba; 20 °. maximum plantar flexion lateral talonavicular joint can reset the film for oblique talus disease, still vertical talus dislocation of disease, the maximum lateral plantar flexion of tamba is to identify the two most obvious indicator.