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Ala of ilium
Other Terms: Wing of ilium, Ilium ala, Ala ossis ilii, Aile de l'ilium
This is the large, flat, wing-like portion of the ilium. It presents two surfaces and three margins. The surfaces are the external or gluteal and internal or sacropelvic. The margins are the superiorly arched iliac crest, the anterior margin, and posterior margin. This portion of the ilium provides attachment sites form many muscles.
Ala is Latin for wing.
Ala ossis ilii
Aile de l'ilium