Corpus: Anterior superior iliac spine
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Synonyms: anterior superior iliac spine
English:
Definition[Bearbeiten]
The spina iliaca anterior superior, short SIAS, is a bony protrusion at the anterior end of the crista iliaca of the os ilium.
Anatomy[Bearbeiten]
The spina iliaca anterior superior is a very prominent bony prominence that is easily palpable through the skin and is an important landmark for intramuscular injections in the gluteal region. It lies cranial to the anterior inferior iliac spine on the anterior edge of the iliac crest (ala ossis ilii) and serves as the origin of the sartorius muscle, the tensor fasciae latae muscle and the inguinal ligament.
Clinic[Bearbeiten]
The anterior superior iliac spine develops from its own ossification centre. An apophyseal tear may occur here in adolescents.