The Ponticulus: An Anatomic Study

Abstract

The ponticulus is present in the majority of ears. It is best defined as a bridge of bone from the pyramidal eminence to the promontory and most commonly occurs as a thin, bony structure. This definitive study of the ponticulus will allow the otologic surgeon to better remove disease from the posterior tympanum.

Transcanal Endoscopic Approach to the Sinus Tympani

“…This structure is very important because it represents the superior limit of the ST. In a study based on 50 temporal bones, Holt (14) examined the anatomy of the ponticulus. He described the ponticulus as a sort of bridge of bone extending from the pyramidal eminence to the promontory.…”

Pyramidal eminence and subpyramidal space: An endoscopic anatomical study

“…In 2005, in an anatomical dissection study of 50 temporal bones, Holt found that in 33 specimens there was a complete ponticulus with various thicknesses (1–7 mm or <1 mm). In seven they found a partial formation, and in 10 temporal bones they found a complete absence of this structure 23. The ponticulus shape is also variable because it could appear like a bone or like a ridge, and this is important during ear surgery operations because it is possible that underneath could be hidden residual cholesteatoma.…”

The Ponticulus Ethmoidalis: A Newly Appreciated Anatomic Landmark in Endoscopic Sinus Surgery

“…This term is derived from Latin; it is the diminutive of pont or bridge. 9,10 In anatomy the term is used to describe a small bridge-like structure or slight ridge. We therefore will herein refer to the small tissue bridge within the anterior ethmoid sinus as the ponticulus ethmoidalis and credit Dr. Clement with the nomenclature.…”