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Related Concept Videos

Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

2.2K
The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
2.2K

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Articles linked to this work by shared authors, journal, and citation graph.

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Related Experiment Video

Updated: Jun 27, 2025

Extracting the Cochlea from a Human Temporal Bone: A Cadaveric Protocol
06:42

Extracting the Cochlea from a Human Temporal Bone: A Cadaveric Protocol

Published on: August 18, 2023

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Critical Steps and Common Mistakes during Temporal Bone Dissection: A Survey among Residents and a Step-by-Step Guide

Giovanni Motta1, Eva Aurora Massimilla1, Salvatore Allosso2

  • 1ENT Unit-Department of Mental, Physical Health and Preventive Medicine, University of Campania "Luigi Vanvitelli", 80121 Naples, Italy.

Journal of Personalized Medicine
|April 27, 2024
PubMed
Summary

Novice oto-surgeons frequently injure critical structures during temporal bone dissection, particularly the dura, sigmoid sinus, chorda tympani, and facial nerve. Adequate exposure during mastoidectomy is crucial for safe posterior tympanotomy.

Keywords:
cholesteatomacochlear implantation (CI)cortical mastoidectomy (CM)facial nerve (FN)facial recessmiddle ear surgeryposterior tympanotomy (PT)temporal bone dissectiontraining in oto-surgery

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Surgical Anatomy

Background:

  • Temporal bone dissection is essential for oto-surgeons learning middle ear surgery.
  • This complex anatomical region requires meticulous dissection techniques for safe practice.

Purpose of the Study:

  • Identify common errors and critical steps in initial temporal bone dissection.
  • Focus on cortical mastoidectomy and posterior tympanotomy procedures.

Main Methods:

  • Survey of 100 ENT residents regarding dissection errors.
  • Analysis of challenging aspects faced by novice surgeons.

Main Results:

  • Common errors include dura opening, sigmoid sinus, chorda tympani, and facial nerve injury.
  • Lack of wide exposure during mastoidectomy hinders landmark identification for posterior tympanotomy.
  • Injuries were more frequent in less experienced surgeons and those with fewer than five dissection courses.

Conclusions:

  • Extensive cadaveric temporal bone dissection is mandatory for ENT residents.
  • Mastery of dissection techniques is vital for preventing surgical complications.