Which of the fontanelle is last to close?
Time of closure of different fontanelle: Posterior fontanelle- 2 to 3 months after bih Anterior fontanelle- 10-24 months after bih Mastoid fontanelle- 6- 18 months after bih Sphenoidal fontanelle- 6months after bih Ref: Nelson's 20th edition, page 2793
Posterior fontanelle
Anterior fontanelle
Mastoid fontanelle
Sphenoidal fontanelle
General anatomy