This site is intended for healthcare professionals
General Practice Notebook
Medical search

arcuate line (anatomy)

FREE subscriptions for doctors and students... click here
You have 3 open access pages.

The arcuate line is the inferior margin of the posterior leaflet of the rectus sheath within the abdomen. The posterior leaflet of the sheath is formed, superficial to deep, from the:

  • posterior part of the internal oblique aponeurosis
  • transversus abdominis aponeurosis
  • transversalis fascia

Below the arcuate line, there is a transition so that all but the transversalis fascia pass anterior to rectus abdominis.

The arcuate line can be seen from the peritoneal surface of the rectus sheath as a superiorly convex line. It is roughly positioned half way between the umbilicus and the pubic crest.

Clinically, the arcuate line is important as the:

  • site of entry of the inferior epigastric artery into the rectus sheath
  • site of weakness: site of Spigelian hernia

Links:

General Practice Notebook
General Practice Notebook
The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions. Copyright 2016 Oxbridge Solutions LtdĀ®. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions LtdĀ® receives funding from advertising but maintains editorial independence. GPnotebook stores small data files on your computer called cookies so that we can recognise you and provide you with the best service. If you do not want to receive cookies please do not use GPnotebook.