Anterior superior iliac spine

Bone: Anterior superior iliac spine
The obturator membrane. (Anterior superior iliac spine visible in upper left).
Location of McBurney's point (1), located two thirds the distance from the umbilicus (2) to the anterior superior iliac spine (3).
Latin	spina iliaca anterior superior
Gray's	subject #57 234

The anterior superior iliac spine (ASIS) is an important landmark of surface anatomy. It refers to the anterior extremity of the iliac crest of the pelvis, which provides attachment for the inguinal ligament and the sartorius muscle.

ASIS provides a clue in identifying some other clinical landmarks, including:

1. McBurney's point
2. Gardner's line
3. Inguinal ligament

A - Anterior (front, like the face)
S - Superior (towards the head, opposite to feet)
I - Iliac (Pelvis bone)
S - Spine

Additional images

Right hip bone. External surface.

The subcutaneous inguinal ring.

See also

• Bone terminology
• Terms for anatomical location
• Ilium (bone)
• Human anatomical terms

External links

• SUNY Labs 17:os-0105 - "Major Joints of the Lower Extremity: Hip bone (lateral view)"
• SUNY Labs 35:os-0103 - "Anterior Abdominal Wall: Osteology and Surface Anatomy"
• Anterior+superior+iliac+spine at eMedicine Dictionary
• Roche Lexicon - illustrated navigator, at Elsevier 03281.000-3
• Diagram at Wayne State

v • d • e Bones of pelvis / pelvic cavity General sacrum · coccyx · hip bone Ilium body arcuate line wing gluteal lines (posterior, anterior, inferior) iliac spines (anterior superior, anterior inferior, posterior superior, posterior inferior) other: crest · tuberosity · fossa Ischium body ischial spine · lesser sciatic notch superior ramus tuberosity of the ischium inferior ramus no substructures Pubis body pubic crest superior ramus pubic tubercle · obturator crest inferior ramus pectineal line Compound acetabulum (acetabular notch) · iliopubic eminence / iliopectineal line · linea terminalis · ischiopubic ramus / pubic arch obturator foramen · greater sciatic foramen / greater sciatic notch · lesser sciatic foramen lesser pelvis (pelvic inlet, pelvic brim, pelvic outlet) · greater pelvis

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