| Bone: Anterior superior iliac spine | |
|---|---|
| The obturator membrane. (Anterior superior iliac spine visible in upper right of illustration). | |
| Location of McBurney's point (1), 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 (ASIS) is 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 Fascia Lata attaches about 5cm away at the iliac tubercle.
ASIS provides a clue in identifying some other clinical landmarks, including:
A - Anterior (front, like the face)
S - Superior (towards the head, opposite to feet)
I - Iliac (Pelvis bone)
S - Spine
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