The anterior fontanel normally closes within which age range?

Prepare for Wong's Essentials of Pediatric Nursing Test. Study with detailed questions, hints, and explanations. Enhance your knowledge and get ready to succeed!

Multiple Choice

The anterior fontanel normally closes within which age range?

Explanation:
The anterior fontanelle stays open to allow rapid brain growth in infancy and then ossifies as the skull bones fuse. It normally closes between about 12 and 18 months (some children may close a bit later, up to around 2 years). This 12–18 month window reflects typical skull development. Closing much earlier (birth or 0–6 months) would be premature, while closing around 2–3 years would be later than usual. The posterior fontanelle, by contrast, closes much earlier, around 2–3 months, which helps why the anterior fontanelle takes longer to seal.

The anterior fontanelle stays open to allow rapid brain growth in infancy and then ossifies as the skull bones fuse. It normally closes between about 12 and 18 months (some children may close a bit later, up to around 2 years). This 12–18 month window reflects typical skull development. Closing much earlier (birth or 0–6 months) would be premature, while closing around 2–3 years would be later than usual. The posterior fontanelle, by contrast, closes much earlier, around 2–3 months, which helps why the anterior fontanelle takes longer to seal.

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