Wormian bones

Wormian bones, also known as extra sutural bones are extra bone pieces that occur within a suture in the cranium. These are irregular isolated bones which appear in addition to the usual centers of ossification of the cranium and, although unusual, are not rare.  They occur most frequently in the course of the lambdoid suture, which is more “torturous” of a suture. They are also occasionally seen within the sagittal and coronal sutures. A large wormian bone at lambda is often referred to as an Inca bone (Os Incae),  due to the relatively high frequency of occurrence in Peruvian mummies. (Source: Wikipedia)

Other similar posts
This entry was posted in Bones, Congenital anomaly and tagged , , , .