What is the most common site for A-V malformation following LeFort I osteotomy?

After a LeFort I osteotomy, the most common site for an arteriovenous (A-V) malformation is indeed the descending palatine artery. A LeFort I osteotomy involves the mobilization of the maxilla, which can impact the vascular supply in the region. The descending palatine artery is a branch of the maxillary artery that supplies the hard palate and the gingiva.

During the procedure, there is a potential for disruption to the normal anatomy of vessels, particularly the descending palatine artery. This disruption can lead to abnormal connections between arteries and veins, resulting in an A-V malformation. Since this area is already subjected to surgical manipulation, the likelihood of developing such vascular abnormalities is elevated due to the intervention's effect on the surrounding tissue and blood supply.

The other vessels listed, while important in the maxillary vascular anatomy, do not typically have the same association with A-V malformations following this specific procedure. The maxillary artery (arterial supply) itself is further upstream and less impacted directly by the osteotomy. The infraorbital artery, though it arises from the maxillary artery, primarily supplies the face and would not have the same complication risk directly related to the LeFort I site. The angular artery