How is Craniosynostosis Diagnosed?

December 13, 2017

How is Craniosynostosis Diagnosed?

What is Craniosynostosis?

Craniosynostosis is a rare condition where a baby’s head isn’t growing properly and presents itself as an abnormal head shape. Babies have fourteen bones in their skull, nine in the lower part of the skull, the cranial base and five in the uppers skull, the cranial vault. We are concerned with the upper part of the skull, the vault. Each of the bones in the vault has gaps between them that are otherwise known as cranial sutures. These sutures remain open and flexible during infancy, and become gradually more firm throughout childhood, finally becoming more firm in young adulthood. Craniosynostosis occurs when one or more of these sutures fuse (close) prematurely.

Difference Between Craniosynostosis and Plagiocephaly

To the untrained eye, Craniosynostosis can be mistaken for Plagiocephaly as both conditions show as a head shape deformity. However, there are some key differences between the conditions. Unlike craniosynostosis, plagiocephaly and other flat head syndrome conditions develop as a result of moulding from external pressures to the head in early infancy. Craniosynostosis is a result of abnormalities in the sutures between the bones in the upper part of the skull.

Spotting Craniosynostosis

Although craniosynostosis and plagiocephaly are different, parents can still spot that there is a problem through similar tell-tale signs:

  • If a baby’s head is long and narrow in shape
  • If one side of a baby’s face is flattened or bulging
  • If a baby’s head is pointy or triangular at the brow
  • If the soft spot on the top of a baby’s head is very small when the baby is born

How is Craniosynostosis Diagnosed?

The condition can be diagnosed by professionals, such as a GP. Although we are unable to treat craniosynostosis at Technology in Motion, our clinicians know the signs to look for when a baby has craniosynostosis rather than a form of flat head syndrome.

Craniosynostosis diagnosis is usually the result of a visual assessment of a baby’s head, then the specialist will run their fingers along each of the suture lines to feel for abnormalities. This in itself can be sufficient to determine whether there is a craniosynostosis and confirmation of the diagnosis is mad by X-rays or scans which will identify which suture is fused and will give doctors the information needed to plan a course of action.

Types of Craniosynostosis

There are four main types of craniosynostosis: Sagittal Synostosis, Coronal Craniosynostosis, Metopic Synostosis, and Lambdoid Synostosis.

Sagittal Synostosis is when the sagittal suture (located at the top of the head) fuses early, and is the most common form of craniosynostosis. This gives a long thin head shape

Coronal Craniosynostosis occurs when the coronal sutures, which are the sutures connecting the top of the head to the ears, fuse early. This can cause flattening on the same side of the face as the synostosis.

Metopic Synostosis is early fusion of the suture between on the brow. This usually shows as a very narrow pointed brow shape.

Lambdoid Synostosis occurs when one of the lambdoid sutures at the very back of the head is fused early. This type of synostosis is very rare.

Surgery is the only option in all cases of synostosis and if surgery is to be carried out, it’s important for specialists to consider which suture has fused, the baby’s age, and any other symptoms that the infant might be showing.

Treatment for Craniosynostosis

Treatment of craniosynostosis requires surgery, which is most effective when done during a baby’s first year but in all cases, the surgical team will consider all options before carrying out any intervention.

If you’re concerned that your baby may have craniosynostosis, it’s important that you get them checked out by a specialist, whether it be your baby’s paediatrician or other. Although craniosynostosis is very rare, our clinicians sometimes identify craniosynostosis in babies whose parents have brought them into Technology in Motion with what they thought was flat head syndrome. In all such cases, we advise parents to take their baby to a GP for a referral to a neurosurgeon or their nearest craniofacial unit. In some circumstances, a plagiocephaly helmet can be used post-surgery to bring about further correction of a baby’s head shape.

If you’re uncertain about your baby’s head shape, you can book a free initial assessment with one of our friendly clinicians.