The iliac fossa is a large, smooth, concave surface on the internal surface of the ilium (part of the 3 fused bones making the hip bone). The fossa is bounded above by the iliac crest, and below by the arcuate line; in front and behind, by the anterior and posterior borders.
The fossa gives origin to the Iliacus muscle and is perforated at its inner part by a nutrient canal; below this there is a smooth, rounded border, the arcuate line, which runs anterior, inferior, and medial.
Additional images
The iliacus and nearby muscles
The iliacus and nearby muscles
Iliac fossa
Iliac fossa
Iliac fossa
Iliac fossa
Hip joint. Lateral view. Iliac fossa
Hip joint. Lateral view. Iliac fossa
Lumbar and sacral plexus. Deep dissection.Anterior view
Lumbar and sacral plexus. Deep dissection.Anterior view