Lateral arcuate ligament

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Lateral arcuate ligament
The diaphragm. Under surface. (Lat. arcuate ligament visible at bottom left.)
Latin ligamentum arcuatum laterale
Gray's p.405
TA A04.4.02.007
FMA FMA:58283
Anatomical terminology

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.


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.

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This article incorporates text from a public domain edition of Gray's Anatomy.