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Body of the ilium
Other Terms: Ilium body, Corpus ossis ilii, Corps de l'ilium
The body forms the thickened base of the ilium. Its external surface contributes to the upper two-fifths of the acetabulum. The upper part of this surface is smooth, contributing to the lunar articular surface with the femur. The lower portion of this surface is rough, contributing to the acetabular fossa in the central portion of the cup. The internal surface of the body contributes to the lateral wall of the true pelvis and provides attachment for the obturator internus muscle.
The term body or its Latin equivalent corpus refers to the large central portion of a structure.
Corpus ossis ilii
Corps de l'ilium