In fracture maxilla most common nerve involved is?: (A) Infra orbital nerve, (B) Supraorbital nerve, (C) Trochlear nerve, (D) Mandibular nerve
Answer is A. ANSWER: (A) Infra orbital nerveREF: Dhingra 4th ed p. 174Clinical Features of maxillary fractures:Ecchymosis of lid, conjunctiva and scleraEnophthalmos with inferior displacement of the eyeball. This becomes apparent when edema subsides.Diplopia, -which may be due to displacement of the eyeball or entrapment of inferior rectus and inferior oblique muscles.Hypoaesthesia or anesthesia of cheek and upper lip, if infraorbital nerve is involved