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Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

The Auditory Ossicles

The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...

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Related Experiment Video

Updated: Jun 23, 2026

Techniques of Endoscopic Ossiculoplasty

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Published on: January 26, 2024

[Optical coherence tomography in middle ear surgery].

T Just¹, E Lankenau, G Hüttmann

¹Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Kopf- und Halschirurgie "Otto Körner" der Universität Rostock, Doberaner Strasse 137-139, 18057, Rostock, Deutschland. tino.just@med.uni-rostock.de

|April 23, 2009

Summary

This summary is machine-generated.

Optical coherence tomography (OCT) offers significant diagnostic potential in middle ear surgery for evaluating stapes fixation and guiding cochlear implantation. This technology precisely visualizes ear structures, aiding surgeons in real-time decision-making during operations.

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Area of Science:

Otolaryngology
Medical Imaging
Surgical Technology

Context:

Middle ear surgery presents challenges in intraoperative visualization and assessment.
Accurate imaging is crucial for procedures like stapes surgery and cochlear implantation.
Existing methods may have limitations in depicting fine anatomical details within the middle and inner ear.

Purpose:

To explore the diagnostic potential and applications of optical coherence tomography (OCT) in middle ear surgery.
To define specific intraoperative uses for OCT based on in vivo, ex vivo, and animal investigations.
To evaluate OCT's utility in assessing stapes fixation, footplate morphology, and perilymph fistulas.

Summary:

Optical coherence tomography (OCT) provides high-resolution, precise visualization of middle and inner ear structures.
Key applications include intraoperative evaluation of stapes fixation, assessment of stapes footplate morphology in revision surgeries, and orientation during cochlear implantation.
OCT aids in visualizing the oval window niche, assessing perilymph fistulas, and demonstrating inner ear structures.

Impact:

OCT enhances surgical precision and decision-making in complex middle ear procedures.
It offers a non-invasive method for detailed intraoperative anatomical assessment.
Potential to improve outcomes in stapes surgery, reconstructive middle ear surgery, and cochlear implantation.