Anterior superior iliac spine (Redirected from Interspinous plane)

Anterior superior iliac spine
Gray435.png
The obturator membrane (anterior superior iliac spine visible in upper right of illustration)
Gray abdomen front surface en.png
Anterior superior iliac spine labeled second to bottom, right.
Details
Identifiers
LatinSpina iliaca anterior superior
TA98A02.5.01.111
TA21327
FMA49465
Anatomical terms of bone

The anterior superior iliac spine (abbreviated: ASIS) is a bony projection of the iliac bone, and an important landmark of surface anatomy. It refers to the anterior extremity of the iliac crest of the pelvis. It provides attachment for the inguinal ligament, and the sartorius muscle. The tensor fasciae latae muscle attaches to the lateral aspect of the superior anterior iliac spine, and also about 5 cm away at the iliac tubercle.

Structure

The anterior superior iliac spine refers to the anterior extremity of the iliac crest of the pelvis. This is a key surface landmark, and easily palpated. It provides attachment for the inguinal ligament, the sartorius muscle, and the tensor fasciae latae muscle.

A variety of structures lie close to the anterior superior iliac spine, including the subcostal nerve, the femoral artery (which passes between it and the pubic symphysis), and the iliohypogastric nerve.

Clinical significance

The anterior superior iliac spine provides a clue in identifying some other clinical landmarks, including McBurney's point, Roser-NĂ©laton line, and true leg length. It is an important surface landmark for various surgical approaches, such as treatment of hernia. The severity of symptoms of damage to the iliohypogastric nerve can show whether damage occurred above or below the anterior superior iliac spine.

Bone may be harvested from the nearby iliac crest for use elsewhere in the body. As the subcostal nerve lies close to the anterior superior iliac spine, this is put at risk of damage.

The iliotibial tract may be irritated where it passes over the anterior superior iliac spine in iliotibial band syndrome.

Additional images

See also



This page was last updated at 2022-11-11 06:09 UTC. Update now. View original page.

All our content comes from Wikipedia and under the Creative Commons Attribution-ShareAlike License.


Top

If mathematical, chemical, physical and other formulas are not displayed correctly on this page, please useFirefox or Safari