Ponticle of promontory
Ponticulus promontorii
Definition
Ponticle of promontory (a.k.a. ponticulus promontorii) is a small bony recess, that marks the posterior extension of the promontory on the medial wall of the middle ear cavity. It extends backwards from the promontory towards the pyramidal eminence, thereby separating the facial recess above from the sinus tympani below.
References
Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.
Standring, S. and Gray, H. (2016). ‘Chapter 37: External and middle ear’ in Gray’s anatomy The anatomical Basis of Clinical Practice. (41st ed.) New York: Elsevier, pp. 634 & Fig. 37.11.
