Question
The suture marked in the picture below usually closes by the age of ?
A. 6 months.
B. 2 years.
C. 3 years.
D. 6 years.
Show Answer
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Correct Answer » D
Explanation
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The suture marked by an arrow above represents metopic suture.
- The metopic suture (also known as the median frontal suture) is a type of calvarial suture. It is often associated with frontal sinus agenesis or hypoplasia.
- This suture runs through the midline across the frontal bone from the nasion to the bregma although it may often be incomplete.
- The metopic suture is usually closed by about 6 years of age, but in rare cases it can persist as an anatomical variant of little clinical significance but that it can be mistaken for frontal bone fracture.
- A premature fusion of the suture is termed metopic synostosis (type of craniosynostosis) which can then result in trigonocephaly.
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