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AnatomyLower limbHip and thighAnterior inferior iliac spine
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AnatomyLower limbHip and thighAnterior inferior iliac spine

Anterior inferior iliac spine

Author: Danijel Tosovic, PhD • Reviewer: Dimitrios Mytilinaios, MD, PhD
Last reviewed: April 16, 2024
Reading time: 1 minute

Recommended video: Bony pelvis [27:56]
Overview of the bony pelvis.
Anterior inferior iliac spine
Spina iliaca anterior inferior
1/5
Synonyms: AIIS

The anterior inferior iliac spine (AIIS) is a rough bony projection on anterior border of the ilium of the hip, inferior to the anterior superior iliac spine and immediately above the acetabulum.

The AIIS is divided into an upper part to which the straight head of the rectus femoris attaches and a lower part which serves as an attachment point for the proximal end of the iliofemoral ligament.

Avulsions of the rectus femoris from the AIIS can occur with significant mechanical stress, particularly in sports involving kicking.  

Terminology English: Anterior inferior iliac spine
Latin: Spina iliaca anterior inferior
Definition Rough bony projection on anterior border of the ilium
Attachments Straight head of rectus femoris and proximal end of iliofemoral ligamen

Learn more about the bony landmarks of the hip bone with this study unit (and article):

Hip bone Explore study unit
Hip bone Read article

Sources

All content published on Kenhub is reviewed by medical and anatomy experts. The information we provide is grounded on academic literature and peer-reviewed research. Kenhub does not provide medical advice. You can learn more about our content creation and review standards by reading our content quality guidelines.
  • Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2014). Clinically Oriented Anatomy (7th ed.). Philadelphia, PA: Lippincott Williams & Wilkins.
  • Standring, S. (2016). Gray's Anatomy (41st ed.). Edinburgh: Elsevier Churchill Livingstone.

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