[The intermamillary index of newborn infants]

Using 500 healthy newly born babies age specific standard for intermamillary index was defined in order to improve objective criteria for the clinical features of 'widely spaced nipples' as it is to realize in connection with a variety of complex morphogenetic disturbances. Independent of sex and of post natalage the mean value is y mean = 23.31 and the standard deviation s = +/- 1.24. Consequently, the normal +/- 2s range is to be appraised between 21.0 and 26.0. In small-for-gestational-age infants and in babies born by breech presentation the + 2s limit is reduced to 25.0.