Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.
one of three rough curved lines on the outer surface of the ala of the ilium: anterior gluteal line, inferior gluteal line, and posterior gluteal line; the two areas bounded by these give attachment to the gluteus minimus muscle below and gluteus medius above.
Synonym(s): lineae gluteae [TA]
The posterior, the anterior, or the inferior gluteal line, which are bony ridges on the posterior (exterior) surface of the ilium parallel to the iliac crest. The posterior gluteal line runs along the outer edge of the iliac crest and marks the upper edge of the origin of the gluteus medius muscle. The anterior gluteal line has the same contour as the iliac crest but runs a few centimeters lower and marks the upper edge of origin of the gluteus minimus muscle. The inferior gluteal line has a contour similar to, but fainter than, the other gluteal lines, it runs a few centimeters above the acetabulum, and it marks the lower edge of the origin of the gluteus minimus muscle on the ilium.
See also: line