|Anterior superior iliac spine|
|The obturator membrane (anterior superior iliac spine visible in upper right of illustration)|
|Location of McBurney's point (1), which is located two thirds the distance from the umbilicus (2) to the anterior superior iliac spine (3).|
|Latin||Spina iliaca anterior superior|
|Gray's||subject #57 234|
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, which provides attachment for the inguinal ligament, and the sartorius muscle. The Tensor fasciae latae muscle attaches about 5cm away at the iliac tubercle.
The anterior superior iliac spine provides a clue in identifying some other clinical landmarks, including:
- McBurney's point
- Roser-Nélaton line
A – Anterior (front, like the face)
S – Superior (towards the head, opposite to feet)
I – Iliac (Pelvis bone)
S – Spine
Right hip bone. External surface.
The subcutaneous inguinal ring.
Anterior superior iliac spine
Hip joint. Lateral view. Anterior superior iliac spine