Anterior superior iliac spine
| Anterior superior iliac spine | |
|---|---|
 The obturator membrane (anterior superior iliac spine visible in upper right of illustration) | |
 Anterior superior iliac spine labeled second to bottom, right | |
| Details | |
| Identifiers | |
| Latin | spina iliaca anterior superior |
| TA98 | A02.5.01.111 |
| TA2 | 1327 |
| FMA | 49465 |
| Anatomical terms of bone | |
The anterior superior iliac spine (ASIS) is a bony projection of the
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,[1][4] and the tensor fasciae latae muscle.[2][3]
A variety of structures lie close to the anterior superior iliac spine, including the subcostal nerve,[5] the femoral artery (which passes between it and the pubic symphysis),[4] and the iliohypogastric nerve.[6]
Clinical significance
The anterior superior iliac spine provides a clue in identifying some other clinical landmarks, including McBurney's point, Roser-Nélaton line, and true leg length. It is an important surface landmark for various surgical approaches, such as treatment of hernia.[7] The severity of symptoms of damage to the iliohypogastric nerve can show whether damage occurred above or below the anterior superior iliac spine.[6]
Bone may be harvested from the nearby iliac crest for use elsewhere in the body.[5] As the subcostal nerve lies close to the anterior superior iliac spine, this is put at risk of damage.[5]
The iliotibial tract may be irritated where it passes over the anterior superior iliac spine in iliotibial band syndrome.[3]
The line around anterior superior iliac spine is sometimes called the panty line or "bikini line".[8] It is considered to be a "discreet" location for concealing cosmetic surgery scars and ports.[9]
Additional images
-
Right hip bone. External surface. -
Right hip bone. Internal surface. -
The subcutaneous inguinal ring -
ASIS visible at top left, as the origin of several muscles -
Location of McBurney's point (1), which is located two thirds the distance from the umbilicus (2) to the anterior superior iliac spine (3)
See also
- Bone terminology
- Anatomical terms of location
- Ilium (bone)
- Human anatomical terms
References
- ^ ISBN 978-0-443-06815-7, retrieved 2020-12-15
- ^ ISBN 978-0-7020-3739-9, retrieved 2020-12-15
- ^ ISBN 978-0-443-06815-7, retrieved 2020-12-15
- ^ ISBN 978-0-443-10373-5, retrieved 2020-12-15
- ^ ISBN 978-0-12-803062-2, retrieved 2020-12-15
- ^ ISBN 978-0-12-410390-0, retrieved 2020-12-15
- ISBN 978-0-443-06651-1, retrieved 2020-12-15
- PMID 23716987.
- ISSN 0930-2794.
External links
- "Anatomy diagram: 03281.000-3". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-07-22.
- Diagram at Wayne State
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