NEUROCRANIAL MORPHOLOGY AS DETERMINED BY ASYMMETRIES OF THE SKULL BASE

The goal of the current study was to provide an easy to use criterion to diagnose neurocranial asymmetries. An anatomical survey of the exte rnal aspect of the skull base was planned to correlate with radiologic al studies. In a sample of 239 skulls, variations of the angular relat ionship between the structures seen on a basilar view of the cranium w ere analysed. An anterior and a posterior transverse line were plotted with respect to the midline. Departures from 90 degrees to the midlin e for either of the transverse lines were less than 5 degrees in norma l skulls, between 5 degrees and 7 degrees in skulls classed by indepen dent inspection as asymmetric, and more than 7 degrees in obviously ma lformed skulls.