Infraorbital Groove

The infraorbital neurovascular bundle enters the posterior orbit through the inferior orbital fissure and runs almost straight anteriorly in the infraorbital groove of the orbital floor (Fig. 2-10). More anteriorly, the infraorbital groove is usually roofed over with a thin layer of bone, forming the infraorbital canal, which leads the neurovascular bundle through the infraorbital foramen to the superficial structures of the face.

Figure 2 10 Anatomic dissection of the orbital floor, lateral and inferior orbital rims. IOF=Inferior orbital fissure anfter incision of contents; ION-Infraorbital nerve in canal/groove after unroofing; ZFN=zygomaticofacial nerve; ZTN=zygomaticotemporal nerve.

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