Corpus: Lateral arcuate ligament
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Synonyms: Ligamentum arcuatum laterale, quadratus arcade, quadratus arcade
English: , lateral lumbocostal arch
Definition[Bearbeiten]
The lateral lumbocostal arch is a fibrous band at the posterior edge of the diaphragm that bridges the quadratus lumborum muscle in an arch.
See also: Arcus lumbocostalis medialis
Anatomy[Bearbeiten]
The lateral lumbocostal arch is a tendinous reinforcement of the fascia of the quadratus lumborum muscle. Medially, the lateral lumbocostal arch attaches to the costal process of the 1st - according to some authors also the 2nd - lumbar vertebra. The lateral attachment is the tip of the 12th rib.
The lateral lumbocostal arch forms the caudal boundary of the lumbocostal trigonum. It also serves as a point of origin of the pars lumbalis (lateral crus) of the diaphragm.
Podcast[Bearbeiten]
Image source[Bearbeiten]
- Podcast image source: © Midjourney