Anterior Superior Iliac Spine (ASIS) – Meaning and Usage in Medical English

Anterior Superior Iliac Spine – The Medical Term for “Front hip bone landmark”

The anterior superior iliac spine (ASIS) is the bony point at the front of the hip bone that you can feel just below the waistline.

Diagram showing the anterior superior iliac spine, the bony point at the front of the pelvis on both sides of the hip.

👁 What Does “Anterior Superior Iliac Spine” Mean?

Anterior superior iliac spine refers to the prominent bony projection at the front of the pelvis, on the upper edge of the iliac bone.

The term comes from Latin origins: anterior meaning “front,” superior meaning “upper,” iliac relating to the pelvis, and spine referring to a sharp or projecting point.

In medicine, it is almost always used as a surface anatomy landmark, meaning a structure you can see or feel on the body to help guide exams, measurements, or clinical procedures.


🔍 Clinical Usage

In real healthcare settings, the anterior superior iliac spine is frequently mentioned in:

  • Physical examination notes – when describing points of tenderness or alignment
  • Orthopedic and sports medicine assessments – especially for hip, groin, or abdominal pain
  • Physiotherapy and rehabilitation records – to reference posture, gait, or pelvic stability
  • Anatomy teaching materials – as a landmark for surface anatomy demonstrations

Clinicians often abbreviate the term as ASIS, which is widely recognized across medical specialties.

Instead of writing the full name every time, charts and educational texts may note findings simply at the “ASIS.”

Healthcare professionals might use the term when:

  • Palpating the pelvis to assess tenderness or asymmetry
  • Comparing left and right pelvic alignment in posture exams
  • Locating attachment points for muscles such as the sartorius or inguinal ligament
  • Identifying reference points for measuring leg length or pelvic tilt
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A common example sentence you might encounter is:

“Localized tenderness noted over the right ASIS.”
→ This means the patient has pain when the doctor presses on the front bony point of the right hip.

Because this landmark is both visible and palpable, it is ideal for clear communication between clinicians, physiotherapists, radiologists, and students who need exact reference points during examinations or teaching.


🎥 Watch the Short Video

👉 Watch our 30-second clip: Anterior Superior Iliac Spine – Learn how to pronounce it and remember how it’s used in real medical English.

🔗 Related Words

Browse every term in our Medical English Body Parts A–Z guide.