The term "touch" here used means the contact between the median arcuate ligament and the origin of the celiac trunk.
37% of the cadavers, we observed that the median arcuate ligament was overlapping the celiac trunk, which is not in accordance to 21.
54%) cadavers found in this study with the median arcuate ligament touching or overlapping the celiac trunk.
1980) reported an overlap of the median arcuate ligament from 1 to 2 cm which is not in accordance with the real measures.
Some authors admit that the higher origin of the celiac trunk in the aorta, the lower insertion of the median arcuate ligament or both conditions may explain the anatomic anomaly of the celiac trunk in the compression syndrome (Hivet & Lagadec; Warter et al.
Likewise, we observed a free edge of the median arcuate ligament in a more superior position.
Some exceptional cases reported the simultaneous compression of the celiac trunk and the superior mesenteric artery by the median arcuate ligament, which can be explained by the particular disposition of these arteries in the aorta.
In our study, in five cadavers it was observed the median arcuate ligament in a triangle shape interconnecting the two crura and with no skeleton muscular fibers on it and the basis covering the celiac trunk, finishing like a fibrous ring which formed the inferior margin of the diaphragm crura (Figs.
In the histological analysis of the median arcuate ligament, we could observed the presence of dense connective tissue with collagenous fibers infiltrated by adipose cells, blood vessels and nerves.
The denomination aortic channel is related to the complex formation, which converges upon the aortic orifice of the diaphragm, which has an elliptic shape with its greater axe superoinferiorly and anteroposteriorly displayed, thus favoring its transformation into a channel formed by arciform fibers of the median arcuate ligament (Bobbio et al.