Anterior inferior iliac spine
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (October 2021) |
| Anterior inferior iliac spine | |
|---|---|
 The obturator externus muscle (anterior inferior iliac spine visible in upper right) | |
 Right hip-joint from the front (anterior inferior iliac spine visible at upper left) | |
| Details | |
| Identifiers | |
| Latin | spina iliaca anterior inferior |
| TA98 | A02.5.01.112 |
| TA2 | 1328 |
| FMA | 63614 |
| Anatomical terms of bone | |
The anterior inferior iliac spine (AIIS) is a bony eminence on the anterior border of the hip bone, or, more precisely, the wing of the ilium.
Structure
[edit]The AIIS is a bony eminence on the anterior border of the ilium. It is below the anterior superior iliac spine.
Development
[edit]The AIIS is formed from a separate ossification centre to the rest of the ilium.[1]
Function
[edit]The upper portion of the spine gives origin to the straight head of the rectus femoris muscle.[1] A teardrop-shaped lower portion gives origin to the iliofemoral ligament of the hip joint and borders the rim of the acetabulum.[1]
Anteromedially and inferiorly to the AIIS is the iliopsoas groove, the passage for the iliopsoas muscle as it passes down to the lesser trochanter of the femur. A vague line, the inferior gluteal line, might run from the AIIS to the greater sciatic notch which delineates the inferior extent of the origin of gluteus minimus muscle.[1]
Clinical significance
[edit]Rectus femoris muscle may avulse from the AIIS with significant mechanical stress.[2] This may be surgically reattached.[2]
Additional images
[edit]-
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Hip joint. Lateral view. Anterior inferior iliac spine visible to the left.
Notes
[edit]- ^ a b c d Morris CE (2005). Low back syndromes: integrated clinical management. McGraw-Hill Professional. pp. 49–50. ISBN 0-07-137472-8.
- ^ a b Maalouly J, Aouad D, Ayoubi R, Dib N, Darwish M, Saidy E, Nehme A (October 2020). "Anterior inferior iliac spine avulsion fracture post hip arthroscopy for Femoroacetabular impingement". Trauma Case Reports. 29: 100342. doi:10.1016/j.tcr.2020.100342. PMC 7453136. PMID 32885017.
