Lateral arcuate ligament

Lateral arcuate ligament
The diaphragm. Under surface. (Lat. arcuate ligament visible at bottom left.)
Latin	ligamentum arcuatum laterale
Gray's	subject #117 405

The lateral arcuate ligament (also lateral lumbocostal arch) is a ligament under the diaphragm that arches across the upper part of the quadratus lumborum. It is traversed by the subcostal nerve, artery and vein.

Structure

The lateral arcuate ligament runs from the front of the transverse process of the first lumbar vertebra, and, laterally, to the tip and lower margin of the twelfth rib. It forms an arch over the quadratus lumborum muscle.

See also

• Medial arcuate ligament
• Median arcuate ligament

External links

• SUNY Figs 40:04-10 - "The abdominal surface of the diaphragm."
• posteriorabdomen at The Anatomy Lesson by Wesley Norman (Georgetown University) (posteriorabdmus&nerves)

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.