Anterior superior spine
Anterior superior spine - Definition
It is a bony protuberance at the anterior termination of the iliac crest. It is also refered to as "Anterior superior iliac spine" or ASIS.
Anterior superior spine - Location
The structure is located in the largest of the three pelvic bones known as the ilium. It is among the most palpable and visible pelvic extremities.
Anterior superior spine - Function
The apex of this projection provides attachment for the sartorius muscle and the inguinal ligament. Its medial and lateral sides provide attachment to the iliacus and the tensor fasciae latae muscles, respectively.
It is also an important structure in surface anatomy and provides clues in detecting other clinically important landmarks, such as Roser-Nélaton line and McBurney's point.
Anterior superior spine - Pictures
The images underneath will give you a good idea about the location and appearance of this musculoskeletal structure.
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