Fontanelle
Sagittal
section of skull. This is a drawing of the head of a newborn baby as seen from above, showing the fontanelles and sutures. Originally the picture has been published in 1918 and therefore lapsed into the public domain. The original terms have been deleted and German and Latin terms have been added.
Fontanelle
• Cranium - Gray's anatomy illustration - Ganzer Fall bei Radiopaedia
Fontanelles are the soft membraneous regions of the fetus and neonate calvarium where the corners of three or four developing flat bones meet and allow for the growth over the skull over the developing brain.
There are two main, palpable fontanelles in the midline:
- anterior fontanelle, the largest fontanelle, which closes (fuses) at 18-24 months of age to become the bregma
- posterior fontanelle which fuses at 3 months of age to become the lambda
There are two smaller paired bilateral fontanelles:
- anterolateral (sphenoidal) fontanelle which fuses at 6 months of age to become the pterion
- posterolateral (mastoid) fontanelle which fuses in the second year of life to become the asterion
Clinical significance
- assessment of calvarial growth
- assessment of hydration status
- assessment of intracranial pressure
- provides an acoustic window for neonatal head ultrasound
Related pathology
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Fontanelle: