Suprameatal triangle - definition
The suprameatal triangle refers to a region in the temporal bone.
SUPRAMEATAL TRIANGLE - appearance
This area is triangular in shape. It is formed by the posterior wall of the external acoustic meatus, the zygomatic arch root as well as the Macewen’s triangle - a line joining the appendages of the posterior acoustic meatus and the zygomatic arch root.
SUPRAMEATAL TRIANGLE - location
The structure lies in the region within the posterior wall of the external acoustic meatus and the posterior root of the zygomatic process. The mastoid antrum is located around 2 cm below this temporal bone area in adults. It is located at an area deeper than the cymba conchae.
SUPRAMEATAL TRIANGLE - Pictures
Check the images below to get a glimpse of this useful bone structure.
SUPRAMEATAL TRIANGLE - functions
It is used as a significant point of reference in surgeries like Cortical Mastoidectomy that involve the mastoid antrum. It is through this triangle that an appratus may be ushered into the mastoid antrum at the time of Mastoidectomy.
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