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Auricular surface of the sacrum

Other Terms: Facies auricularis (Os sacrum), Facies auricularis ossis sacri

Description

The auricular surface is the ear-shaped, smooth surface on the lateral aspect of the sacral ala. It is covered with hyaline cartilage and forms a synovial joint with the corresponding surface on the iliac portion of the os coxa.

Etymology

Auricular arises from the Latin auris for ear and the suffix -cula a diminutive ending denoting little, therefore the little ear.

Latin

Facies auricularis ossis sacri

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