Iliac fossa
Encyclopedia
The iliac fossa is a large, smooth, concave surface located 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.
Ilium (bone)
The ilium is the uppermost and largest bone of the pelvis, and appears in most vertebrates including mammals and birds, but not bony fish. All reptiles have an ilium except snakes, although some snake species have a tiny bone which is considered to be an ilium.The name comes from the Latin ,...
(part of the 3 fused bones making the hip bone
Hip bone
The hip bone, innominate bone or coxal bone is a large, flattened, irregularly shaped bone, constricted in the center and expanded above and below...
). The fossa is bounded above by the iliac crest, and below by the arcuate line
Arcuate line (ilium)
The arcuate line of the ilium is a smooth rounded border on the internal surface of the ilium. It is immediately inferior to the iliac fossa and Iliacus muscle.It forms part of the border of the pelvic inlet....
; 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
Arcuate line (ilium)
The arcuate line of the ilium is a smooth rounded border on the internal surface of the ilium. It is immediately inferior to the iliac fossa and Iliacus muscle.It forms part of the border of the pelvic inlet....
, which runs anterior, inferior, and medial.