Which Suture Closes Last

In humans, the sequence of fontanelle closure is as follows: 1) posterior fontanelle

At what age does the sagittal suture close?

The sagittal suture starts to close at 21–30 years of age, beginning at the point of intersection with the lambdoid suture and fusing anteriorly (9). If the sagittal suture closes prematurely, the skull becomes long, narrow, and wedge shaped, a condition known as scaphocephaly.

Which suture is the last to close around the age of 50?

Recent post mortem data as well as older studies suggest that the sagittal suture does not completely close until a person is 60 plus years of age, the coronal suture in the mid-50’s, while the lambdoid and squamosal sutures do not typically fully fuse until an individuals mid 60’s to early 70’s.