External Abdominal Oblique

Joe Muscolino

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Anterior and right lateral views of the external abdominal oblique.

  • The external abdominal oblique attaches from the abdominal aponeurosis, pubic bone, inguinal ligament, and the anterior iliac crest to the lower eight ribs.



  • The external abdominal oblique flexes, laterally flexes, and contralaterally rotates the trunk at the spinal joints.
  • It also posteriorly tilts and ipsilaterally rotates the pelvis and elevates the same-side pelvis at the lumbosacral joint.
  • The external abdominal oblique also compresses the abdominal contents.