This article includes a list of general
references, but it lacks sufficient corresponding
inline citations. (October 2021) |
Anterior inferior iliac spine | |
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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.
The AIIS is a bony eminence on the anterior border of the ilium. It is below the anterior superior iliac spine.
The AIIS is formed from a separate ossification centre to the rest of the ilium. [1]
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]
Rectus femoris muscle may avulse from the AIIS with significant mechanical stress. [2] This may be surgically reattached. [2]