Progressive Infraorbital Nerve Hypesthesia as a Primary Indication for Blow-out Fracture Repair

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Abstract
Traumatic blow-out fractures of the orbital floor are a common injury that can lead to significant morbidity. Accepted indications for surgical repair include displaced fractures consisting of a defect > 50% of the orbital floor, extraocular muscle entrapment, and clinically significant enophthalmos. Although infraorbital nerve hypesthesia has been reported as an indication for repair of fractures of the zygomatic complex and is often encountered as an associated finding in fractures of both the orbital floor and inferior orbital rim, it has not been generally regarded as a primary indication for blow-out fracture repair. We report two patients in whom severe, progressive infraorbital nerve hypesthesia served as the primary indication for surgical repair. Both patients experienced improvement in infraorbital nerve function following surgical repair, accompanied by persistent pain and paresthesias in the distribution of the infraorbital nerve. We suggest that progressive infraorbital nerve hypesthesia should be considered a primary indication for blow-out fracture repair in selected patients in whom hypesthesia is both severe and progressive.

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