Ponticulus posticus, an anomaly of the first cervical vertebra as seen on the cephalometric head film

Ponticulus posticus: Another variant present in a recently published case

“…The clinical relevance of a ponticulus posticus has been reported in the surgical (Young et al, 2005;Lee et al, 2006;Leonardi et al, 2009) and radiographic (Pyo and Lowman, 1959;Erickson and Greer, 1984;Cho, 2009) literature. Authors have emphasized the importance of presurgical radiographs for any procedure that requires the placement of lateral mass screws into the atlas (Young et al, 2005;Lee et al, 2006).…”