Arcuate ligament

arcuate ligament

arcuate ligament n.

A thickening of the fascia of the lumbar quadrate muscle, between the transverse process of the first lumbar vertebra and the twelfth rib on either side, that gives attachment to a portion of the diaphragm; lateral arcuate ligament.

A tendinous thickening of the fascia of the greater psoas muscle that extends from the body of the first lumbar vertebra to its transverse process on either side and from which a portion of the diaphragm arises; medial arcuate ligament.

A tendinous connection between the crura of the diaphragm that arches in front on the aorta; median arcuate ligament.


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    the state of being bent or curved. the use of arches in building. a system or grouping of arches. noun the use of arches or vaults in buildings an arrangement of arches arcuation ar·cu·a·tion (är’kyōō-ā’shən) n. A curvature.

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