Cortical Mastoidectomy

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Step 1. Prepare the surgical site

Step 2. Expose temporal bone

Step 3. Identify the sigmoid sinus

Step 4. Identify the antrum

Step 5. Identify the incus

Step 6. Identify the facial nerve

Step 7. Extension to posterior tympanotomy

7.1 The dissection for the posterior tympanotomy should start by displaying the origin of the chorda tympani and the position of the facial nerve.

Posterior tympanatomy