Related Experiment Video
Updated: Jun 10, 2026
10:40
Discovering Middle Ear Anatomy by Transcanal Endoscopic Ear Surgery: A Dissection Manual
Published on: January 11, 2018
Inferior retrotympanum revisited: an endoscopic anatomic study
Daniele Marchioni1, Matteo Alicandri-Ciufelli, Alessia Piccinini
1Department of Otolaryngology-Head and Neck Surgery, University Hospital of Modena, Modena, Italy.
The Laryngoscope
|August 18, 2010
Summary
Endoscopic middle ear surgery reveals new details of the inferior retrotympanic anatomy. Improved understanding of the finiculus and sinus subtympanicus can aid in cholesteatoma surgery.
Area of Science:
- Otolaryngology
- Surgical Anatomy
- Endoscopic Middle Ear Surgery
Background:
- The inferior retrotympanic region is a challenging area to visualize during middle ear surgery.
- Detailed anatomical knowledge of this region is crucial for surgical success.
Purpose of the Study:
- To describe the inferior retrotympanic anatomy using an endoscopic approach.
- To identify and define key anatomical landmarks in the inferior retrotympanum.
Main Methods:
- Retrospective analysis of 25 endoscopic middle ear procedure videos.
- Detailed anatomical descriptions of the inferior retrotympanic region were recorded.
Main Results:
- A bony ridge, the finiculus, was identified in 14/25 cases, defining the border between the inferior retrotympanum and hypotympanum.
- A complete sinus subtympanicus was observed in 14/25 patients, located between the subiculum and finiculus.
Conclusions:
- Endoscopic visualization provides excellent exposure of the inferior retrotympanum.
- Enhanced anatomical understanding may reduce residual disease in cholesteatoma surgery.
