Bridged Sella

The paired anterior and posterior clinoid processes are connected by interclinoid ligaments. Calcification of the ligaments can be seen radiographically, an appearance that has been called the "bridged sella." This calcification can be complete or partial and is seen in ~5% - ~15% of the population.

A bridged sella is usually an incidental finding. Calcifications of the interclinoid ligaments can, however, be seen along with calcifications of the falx in patients with basal cell nevus syndrome.

References

Cederberg RA, Benson BW, Nunn M, English JD. Calcification of the interclinoid and petroclinoid ligaments of sella turcica: a radiographic study of the prevalence. Orthod Craniofac Res. 2003 Nov;6(4):227-32.