NBDE Quiz # 21
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1. Question
In decreasing order of frequency, what is the correct sequence for mandible fractures?
CorrectThe correct answer is B. The quoted frequencies of mandible fractures are: Symphyseal/
parasymphyseal 22%; condyle 24.5%; alveolar 3.1%; coronoid 1.3%; body 16%; angle 24.5%; ramus 1.7%. Fractures of the condyle will result in deviation on opening to the fractured side because of unopposed muscle action of the contralateral medial pterygoid muscle. Therefore, fracture of the right condyle will cause deviation of the mandible to the right upon mouth opening. When considering the entire facial complex, nasal bone fractures are the most common facial fracture.IncorrectThe correct answer is B. The quoted frequencies of mandible fractures are: Symphyseal/
parasymphyseal 22%; condyle 24.5%; alveolar 3.1%; coronoid 1.3%; body 16%; angle 24.5%; ramus 1.7%. Fractures of the condyle will result in deviation on opening to the fractured side because of unopposed muscle action of the contralateral medial pterygoid muscle. Therefore, fracture of the right condyle will cause deviation of the mandible to the right upon mouth opening. When considering the entire facial complex, nasal bone fractures are the most common facial fracture.