Plagiocephaly ("flat-head") and the Mimos Baby Pillow

Shirley Rd Chiropractic is pleased to announce that we have now become a stockist of the Mimos Baby Pillow. For many years we have looked after babies who suffer from plagiocephaly – a condition where the skull flattens on one side. While there have been other products that come and go from the marketplace, Mimos Baby Pillow is the first that we have seen that helps to dramatically reduce the pressure from the baby’s skull while sleeping.

Non-Synostotic Plagiocephaly

Plagiocephaly and its causes

There are two main types of plagiocephaly: (1) Synostosis (sutural fusion), (2) non-synostotic (deformational). The second type is the most common and you may notice flattening of one or even both sides of the head.

On the side of flattening, the forehead (frontal bone) protrudes forward, as does the ear. Traditionally, chiropractors who are experienced in seeing paediatric patients aim to determine the underlying cause of plagiocephaly. The most common causes are from one, or a number, of the below:

  • in utero constraint (multiple births, breech position, small or subluxated maternal pelvis); 
  • birth (tractional or torsional forces during the birth process – our skull is more designed for compression); 
  • torticollis (congenital or traumatic) and 
  • back sleeping.

Non-Synostotic Plagiocephaly Schematic

Plagiocephaly and the cranial dural system

The brain and spinal cord are protected by a 3-layered meningeal (dural) system. It adheres to the surface of the brain and spinal cord and attaches to the inside of the skull. The dura is also anchored at numerous points along the spinal column and finally at the base of the spine. This system contains the cerebrospinal fluid (CSF) that flows through, and around, our brain and spinal cord. CSF is made and re-absorbed at a rate of 20mL/hour and we have 80-150mL at any one time. It is the movement of our cranial bones during breathing, and our sacrum and spine when moving, that encourages the fluid to move within this system. Failure of our cranials and spine to move well may impede this flow. 

Plagiocephaly and the cranial dural system

At birth, there are 6 fontanelles (soft spots on the skull). Five of these close within the first two months, however, the anterior fontanelle remains open up to 18 months. Our cranial bones join along what are called “suture lines”. These cranial sutures are maintained through adult life and allow for movement between each of the cranial bones. Diminished movement of our cranial bones often results following birth. The combination of a very soft skull after being confined within the uterus and the birth process may lead to a strain within the cranial dural system. The strain and tension remains in the system and limits the ability of your baby to move freely. They will find a new neutral position for their head and body, and due to the softness of their skull, and back sleeping, it will begin to mould to their favoured side.


Cranial Sutures in infant

Plagiocephaly and links to cognitive and motor delays

The most common comments parents have heard is: “Don’t worry their hair will grow and cover it up” and “It is only aesthetic”. Research now suggests that this is not the case.

Recent studies have shown that infants who have plagiocephaly at 6 months have lower scores in observational tests for cognitive and motor development. They also have a higher risk of developmental delay. (1-6)

Correcting deformational plagiocephaly

Aiming to improve deformational plagiocephaly involves determining the type and likely cause of the plagiocephaly. If it is a more typical deformational plagiocephaly a conservative strategy utilising gentle chiropractic techniques may be employed. In some situations we may also advise some home care which may include:

  • Counter positioning to limit the time spent on their “flat spot”.
  • Vestibular integration exercises.
  • Tummy time!

Most importantly, if the cause and type of the plagiocephaly is determined to be non-deformational type plagiocephaly of if the degree of plagiocephaly is too great, further referral for neuropaediatric assessment will be recommended. 

Plagiocephaly in babies

Plagiocephaly and the Mimos Baby Pillow

The Mimos Baby Pillow may be helpful for parents who have trouble counter positioning their baby. The pillow is specifically designed to relieve the pressure from a baby’s skull during normal sleeping on the back. The pillow offers:

  • 400% less pressure on the baby’s skull
  • A lightweight, breathable donut shape
  • A unique 3D spacer foam

It is additional peace of mind for parents of babies with plagiocephaly. As an ancillary device it can help in preventing further flattening, especially in those cases where normal repositioning is ineffective. Read more about plagiocephaly here.

1. Speltz, et al. (2010) Case control study of neurodevelopment in deformational plagiocephaly. Paediatrics (in press) Miller & Claren (2000) Long-term developmental outcomes in patients with deformational plagicephaly. Paediatrics 105:e26

2. Ohman, A. et al (2009) Are infants with torticollis at risk of delay in early childhood milestones compared with a control group of healthy infants. Dev Med Child Neurol. 51: 545-550.

3. Siatkowski, R. et al (2005) Visual field defects in deformational posterior plagicephaly. JAAPOS 9:274-278.

4. Balan, P. et al (2002) Auditory ERPs reveal brain dysfunction in infants with plagiocephaly. Journal Craniofacial surgery. 13:520-525.

5. Kordestani, R. et al (2006) Neurodevelopmental delays in children with deformational plagiocephaly. J. Plastic Reconstructive Surgery. 117:207-218.

6. Fowler, E. et al (2008) Neurologic findings in infants with deformational plagiocephaly. Journal of Child Neurology. 23: 742-747.

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