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ENT · Nose and paranasal sinuses: zygomaticomaxillary complex fracture
Sample itemA cricketer struck by a ball has flattening of the cheek, numbness of the cheek and upper lip, a subconjunctival haemorrhage, and tenderness at the lateral orbital rim, the inferior orbital rim and the zygomatic buttress. Which fracture is this?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Zygomaticomaxillary complex (tripod) fracture
The tripod fracture separates the zygoma at the frontozygomatic suture, the inferior orbital rim and the zygomaticomaxillary buttress. Infraorbital nerve injury causes cheek and lip numbness, and trismus can occur from impingement on the coronoid.
Option by option
A. Isolated nasal bone fracture
An isolated nasal fracture gives swelling and deviation of the nose without orbital rim tenderness.
B. Mandibular body fracture
A mandibular body fracture causes malocclusion and lower lip numbness and does not involve the orbital rim.
C. Zygomaticomaxillary complex (tripod) fracture (correct)
Correct. Three tender separation sites with cheek flattening and infraorbital numbness indicate a tripod fracture.
D. Le Fort I fracture
A Le Fort I fracture separates the tooth-bearing maxilla horizontally, with a mobile upper jaw and malocclusion.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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