What is Metopic?
Metopic craniosynostosis is a rare type of craniosynostosis, a condition in which sutures in a baby’s skull fuse together prematurely. The defining feature of a child with this condition is a triangular-shaped head, with the narrow part at the front and the wide part at the back.
What is a Metopic Ridge?
A metopic ridge is a ridge of bone or suture line on the forehead between the two halves of the frontal bone. The ridging is caused when the two halves close prematurely. The physical landmarks of the human face are very similar from one face to another.
What causes Trigonocephaly?
When the suture fuses prematurely the frontal bone and forehead cannot grow in response to the growth of the brain. The remaining open sutures must grow to make up for the lack of growth in the forehead, leading to a triangular head shape called trigonocephaly (see the figure below).
What is Synostosis of the metopic suture?
Metopic synostosis – The metopic suture runs from the baby’s nose to the sagittal suture at the top of the head. If this suture closes too early, the top of the baby’s head shape may look triangular, meaning narrow in the front and broad in the back (trigonocephaly). This is one of the rarest types of craniosynostosis.
Is Metopic Ridge normal?
It is normal for a metopic ridge to form when a child’s metopic suture fuses. It is unknown why some children develop a benign metopic ridge when others do not.
What is benign Metopic Ridge?
The metopic ridge is a bony ridge that forms along your child’s metopic suture line in the forehead once the suture fuses. It is a benign finding and does not require treatment. If your child has symptoms in addition to the metopic ridge, it is important to see your pediatrician.
At what age does the metopic suture close?
The Metopic suture which runs mid-line of the frontal bone will fuse normally with no skull defect between the ages of three(3) months of age and nine(9) months of age.
What is Lambdoid synostosis?
Lambdoid synostosis is premature fusion of one of the lambdoid sutures, situated on the back of the skull. It is the least common of all the non-syndromic synostoses and is distinct from, but often confused with deformational plagiocephaly (non-synostotic plagiocephaly).
What does Oxycephaly mean?
Medical Definition of oxycephaly : congenital deformity of the skull due to early synostosis of the parietal and occipital bones with compensating growth in the region of the anterior fontanel resulting in a pointed or pyramidal skull. — called also acrocephaly, turricephaly.
Where is the Bregma?
The bregma is the midline bony landmark where the coronal and sagittal sutures meet, between the frontal and two parietal bones.
Which is the correct synonym for sutura metopica?
[TA] a persistent frontal suture, sometimes discernible a short distance above sutura frontonasalis. Synonym(s): sutura metopica [TA], persistent frontal suture ☆ , sutura frontalis persistens ☆ A persistent frontal suture, sometimes discernible a short distance above the frontonasal suture.
Where is the metopic suture located in the human body?
Dr Yuranga Weerakkody ◉ et al. The metopic suture (also known as the frontal, interfrontal, or median frontal suture) is a vertical fibrous joint that divides the two halves of the frontal bone and is present in a newborn.
When does the metopic suture fuse in a child?
Metopic suture. This suture runs through the midline across the frontal bone from the nasion to the bregma, although it may often be incomplete. It may fuse as early as 3 months of age and should fuse in nearly all patients by around 9 months of age 1-4 . A premature fusion of the suture is termed metopic synostosis…
Which is the best definition of a suture?
A suture in which the threads are passed through buttons or other prosthetic material on the surface and tied to prevent the suture material from cutting into the skin. catgut suture