lateral arcuate ligament
(redirected from arcus lumbocostalis lateralis)lat·er·al ar·cu·ate lig·a·ment
[TA]a thickening of the fascia of the quadratus lumborum 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.
Synonym(s): ligamentum arcuatum laterale [TA], arcus lumbocostalis lateralis, lateral lumbocostal arch