Posterior superior iliac spine
Encyclopedia
The posterior border of the ala
, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine
. The posterior superior iliac spine serves for the attachment of the oblique portion of the posterior sacroiliac ligaments and the Multifidus. [ see Dimples of Venus
]
Ala of sacrum
On either side of the body of the base of the sacrum is a large triangular surface, which supports the Psoas major and the lumbosacral trunk, and in the articulated pelvis is continuous with the iliac fossa...
, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine
Posterior inferior iliac spine
The posterior border of the ala, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine. The posterior inferior iliac spine corresponds with the posterior extremity of the auricular surface....
. The posterior superior iliac spine serves for the attachment of the oblique portion of the posterior sacroiliac ligaments and the Multifidus. [ see Dimples of Venus
Dimples of Venus
The dimples of Venus are sagittally symmetrical indentations sometimes visible on the human lower back, just superior to the gluteal cleft...
]