Revision 12 for 'Infraorbital nerve'

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Infra-orbital nerve

The infra-orbital nerve is a branches of the maxillary division of the trigeminal nerve.  

Gross anatomy

The infra-orbital nerve divides off the maxillary division just after emerging from the foramen rotundum to enter the pterygopalatine fossa. It courses laterally over the palatine bone and maxilla to enter the orbit through the inferior orbital fissure. It then runs anteriorly in the inferior aspect of the extraconal space within the infra-orbital groove. Within the groove, it gives of sensory branches to the maxillary teeth: 

It then emerges in the face through the infra-orbital foramen emerges through the infraorbital foramen lying between levator labii superioris and levator anguli oris

Branches

Related pathology

The nerve is a risk of injury with orbital blowout fractures.

This nerve is also commonly implicated in trigeminal neuralgia which is amenable to cryotherapy when refractory to medical therapy.

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