Libelle of note

The promontorium gives rise to several bony ridges: (a) the ponticulus promontorii; (b) the subiculum promontorii; and (c) the finiculus.

The clinical term cog refers to a coronally oriented osseous ridge protruding in the middle ear cavity, for which the term processus inferior tegminis was introduced (Lang J 1992 Klinische Anatomie des Ohres. Springer, Wien – New York).

In ENT Surgery, the Crista verticalis is known as 'Bill's bar' (after William House). It separates the Superior portion of the meatus into an anterior channel for the Facial nerve and a posterior channel for the Superior vestibular nerve.

New term; the Ponticulus promontorii is a thin bony bridge from the Eminentia pyramidalis to the Promontorium (from Lang J 1992 Klinische Anatomie des Ohres. Springer, Wien - New York).

The promontorium shows a bony overhang over the cochlear or round window, comprising a postis anterior (anterior pillar), a roof (tegmen) and a postis posterior (posterior pillar) as described by Bolobas B (1972 A hallószery mikrochirurgial anatomija. Könykiadó, Budapest (in Hungarian); Proctor B, Bolobas B, Niparko JK 1986 Anatomy of the round window niche. Acta Otol Rhinol Laryngol 95:444-446). For the tegmen, the term canonus fossulae fenestrae cochleae has been suggested as it forms a canopy overhanging the cochlear window (Topsakal V, Matulic M, Assadi MZ, Mertens G, Van Rompaey V, Van de Heyning P 2020 Comparison of the surgical techniques and robotic techniques for cochlear implantation in terms of the trajectories toward the inner ear. J Int Adv Otol 16:3-7).

See note # 14061

See note # 14061

See note # 14061