The summary of ‘ENT 003 d MacEwen Triangle SupraMeatal Mastoid antrum Landmark Surface Anatomy’

The video discusses various anatomical landmarks crucial for mastoid surgery, including the MEC event triangle, Simba conquer, Kong car, and McKewen triangle. Key points include the identification of the mastoid antrum and spatial relationships within the anatomy. Surgeons utilize these landmarks for navigation during mastoid surgery. The MEC event triangle is located in the external ear canal, helping locate the mastoid antrum, a vital structure in the process. Additionally, the Simba conquer and McKewen triangle provide important borders and connections for accessing the mastoid region.

00:00:00

In this segment of the video, the speaker discusses the MEC event triangle, also known as the supra-miracle triangle, as a bony landmark used in mastoid surgery. The triangle is located within the bony part of the external ear canal and is crucial for identifying the mastoid antrum, the largest air cell in the mastoid process. The speaker explains how surgeons use the MEC event triangle as a landmark to navigate towards the mastoid antrum during surgery.

00:03:00

In this segment of the video, the speaker discusses the anatomy of the Simba conquer and Kong car. The Simba conquer is located on top while another conquer is situated beneath it. The triangle landmark is highlighted, with three borders to be noted: superior border, which aligns with the temporal line; posterior border, formed by a tangent drawn to the external ear canal; and anterior border, which corresponds to the posterior superior segment of the external auditory canal. These details help in understanding the spatial relationships of the landmarks in the anatomy being discussed.

00:06:00

In this segment of the video, the speaker discusses the anatomy of the McKewen triangle. The superior border of the triangle is the temporal line, continuous with the zygomatic arch. The posterior border is a tangent to the external ear, while the anterior border is the superior segment of the ear canal. The McKewen triangle is used to reach the mastoid during mastoid surgery due to its connection to the largest air cell in the mastoid.