Prognathism also known as the habsburg jaw is a positional relationship of the mandible or maxilla to the skeletal base where either of the jaws protrudes beyond a predetermined imaginary line in the coronal plane of the skull.
Modern habsburg jaw.
The researchers led by geneticist román vilas from spain s.
The researchers were interested in mandibular prognathism perhaps better known as the famous habsburg jaw this was a facial deformity that affected some of the habsburgs notably including king.
It is characterized by a jutting lower jaw that is often accompanied by an abnormally thick lower lip and sometimes a tongue that is abnormally large.
Also called the habsburg lip and the austrian lip the habsburg jaw is a physical condition known by the modern term mandibular prognathism.
Besides their long stints in the thrones of numerous countries they re also known for the distinctive habsburg jaw.
But while the line was intact this inbreeding caused this royal family to exhibit a number of peculiar physical traits especially one known as the habsburg jaw.
A new report at smithsonian takes a look back at one of the most distinctive features of a royal family that once ruled much of europe over the course of several centuries.