Ponticulus posticus: Morphometric analysis and Its anatomical Implications for Occipito-Cervical fusion

PP is a relatively common anatomic variant on the atlas, which is characterized by a bony bridge between the posterior part of the superior articular process and the posterolateral part of the posterior arch of C1. The PP could be a congenital osseous architectural variant and there are several hypotheses for its origin, such as remnants of the pro-atlas, accessory transverse foramen of C1 or ossified primitive ligaments of the posterior atlanto-occipital ligament [1 –4].
Source: Clinical Neurology and Neurosurgery - Category: Neurosurgery Authors: Source Type: research