RARE DEVELOPMENTAL ANOMALIES OF THE ODONTOID PROCESS OF THE AXIS

Development of the odontoid process (dens) involves a primary ossification center and a secondary ossification center. The primary center gives rise to the body of the dens. The secondary ossification center, called the chondrum terminale, ossifies and becomes the ossiculum terminale, which normally fuses with the body of the dens and is the tip of the dens. Disruption in the fusing process can give rise to 3 distinct pathologies—ossiculum terminale persistens, os odontoideum, and dystopic odontoideum.

from #Head and Neck by Sfakianakis via simeraentaxei on Inoreader https://ift.tt/2S4aoXw