The lower limb is specialized to support body weight and locomotion, the ability to move from one place to another and maintain balance, the condition of being evenly balanced. The lower limbs are connected to the trunk by the lower limb cingulate (hip and sacrum bones).

The lower limb skeleton is formed by the two hip bones, joined at the pubic symphysis and the sacrum. The lower limb cingulate and the sacrum together form the BONE PELVE.

The Iliac is a flat, flat, irregular, even bone consisting of the fusion of three bones:

 Ilium & #8211; 2/3 higher

 Ischia & #8211; 1/3 lower and posterior (more resistant)

 Pubis & #8211; 1/3 lower and anterior

The bone has two faces, four edges and four angles.


Outer Face

 Iliac Wing & #8211; posterior buttock, anterior buttock and inferior buttock

 Acetabulum Cavity & #8211; Large articular cavity consisting of the union of the three hip bones: ilium, ischium and pubis. The acetabulum has the following structures: semilunar face, acetabulum fossa and acetabulum notch

 Foramen thorium Obtorium & #8211; large rounded opening located between the ischium and the pubis

Inner Face

 Iliac Fossa & #8211; large, smooth and concave face

 Ear Face

 Arched Line & #8211; divides ilium into body and wing


Top Edge

 Iliac Crest & #8211; divided into: outer and inner lip and an intermediate line

Previous Edge

 Anterosuperior Iliac Spine

 Anteroinferior Iliac Spine

 Iliopectinine Eminence & #8211; union point of ilium with pubis

Back Edge

 Posterior Superior Iliac Spine

 Lower Iliac Spine

 Major Ischial Notch & #8211; superior to the sciatic spine

 Ischial Spine & #8211; thin and pointed triangular eminence

 Minor Ischial Notch & #8211; inferior to the sciatic spine

 Ischial Tuber & #8211; large dilated protrusion

Bottom Edge

 Ischiopubic Branch & #8211; union of the ischium with the pubis


 Anterosuperior: Anterosuperior iliac spine

 Posterosuperior: Posterosuperior iliac spine

 Lower Poster: Sciatic Tuber

 Lower Anterus: Pubis

THE Iliac articulates with three bones: Sacrum, Femur and Iliac on opposite side.


Hip Bone Joint


 Iliac - Side View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.
 Iliac - Medial View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.


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