anterior inferior iliac spine

an·te·ri·or in·fe·ri·or il·i·ac spine

[TA]

spine on the anterior border of the ilium between the anterior superior iliac spine and the acetabulum; site of origin for the direct head of the rectus femoris muscle.

Synonym(s): spina iliaca anterior inferior [TA]

an·te·ri·or in·fe·ri·or il·i·ac spine

(an-tēr'ē-ŏr in-fēr'ē-ŏr il'ē-ak spīn) [TA]

The landmark on the anterior aspect of the ilium, inferior to the anterior superior iliac spine.

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an·te·ri·or in·fe·ri·or il·i·ac spine

(ASIS) (an-tēr'ē-ŏr in-fēr'ē-ŏr il'ē-ak spīn) [TA]

The landmark on the anterior aspect of the ilium, inferior to the anterior superior iliac spine.