Infraorbital nerve

Changed by Shi Hong Shen, 28 Aug 2014

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The infraorbital nerve is a one of three cutaneous branches of the maxillary division of the trigeminal nerve. The other branches include the zygomaticofacial nerve (aand the zygomaticotemporal nerve.

Gross anatomy

Course

emerges through the infraorbital foramen lying between levator labii superioris and levator anguli oris.

Branches

palpebral branches to the lower eyelid and cheek
- join with the facial and zygomaticofacial nerves near the lateral canthus
nasal branches to the side and ala of nose
- join the external nasal branch of the anterior ethmoidal nerve)

superior labial branches to the upper lip and labial gum

join branches of the facial nerve to form the infraorbital plexus

Related pathology

Commonly implicated in trigeminal neuralgia which is amenable cryotherapy when refractory to medical therapy.

~~Gross anatomy~~

~~Roots~~

~~Course~~

~~Branches~~

-<p>The <strong>infraorbital nerve </strong>is a one of three branches of the <a title="maxillary nerve" href="/articles/maxillary-nerve">maxillary nerve</a> (a branch of the <a title="Trigeminal nerve" href="/articles/trigeminal-nerve">trigeminal nerve</a>). </p><h4>Gross anatomy</h4><h5>Roots</h5><h5>Course</h5><h5>Branches</h5>
+<p>The <strong>infraorbital nerve </strong>is a one of three cutaneous branches of the <a title="maxillary division" href="/articles/maxillary-division">maxillary division</a> of the <a href="/articles/trigeminal-nerve">trigeminal nerve</a>. The other branches include the <a href="/articles/zygomaticofacial-nerve">zygomaticofacial nerve</a> and the <a href="/articles/zygomaticotemporal-nerve">zygomaticotemporal nerve</a>.</p><h4>Gross anatomy</h4><h5>Course</h5><ul><li>emerges through the <a href="/articles/infraorbital-foramen">infraorbital foramen</a> lying between <a href="/articles/levator-labii-superioris">levator labii superioris</a> and <a href="/articles/levator-anguli-oris">levator anguli oris</a>.</li></ul><h5>Branches</h5><ul>
+<li>palpebral branches to the lower eyelid and cheek<ul><li>join with the facial and zygomaticofacial nerves near the <a href="/articles/lateral-canthus">lateral canthus</a>
+</li></ul>
+</li>
+<li>nasal branches to the side and ala of nose<ul><li>join the external nasal branch of the <a href="/articles/anterior-ethmoidal-nerve">anterior ethmoidal nerve</a>
+</li></ul>
+</li>
+<li>superior labial branches to the upper lip and labial gum<ul><li>join branches of the facial nerve to form the <a href="/articles/infraorbital-plexus">infraorbital plexus</a>
+</li></ul>
+</li>
+</ul><h4>Related pathology</h4><p>Commonly implicated in <a href="/articles/trigeminal-neuralgia">trigeminal neuralgia</a> which is amenable cryotherapy when refractory to medical therapy.</p>