General
Facts
What
is spina bifida?
The term
spina bifida is derived from the Latin words 'spina'
meaning spine and 'bifida' meaning split or divided. The
spine is made up of separate bones called vertebrae,
which normally cover and protect the spinal cord. In
spina bifida, some of these vertebrae are not completely
formed but are split or divided and the defective spinal
cord and its coverings usually protrude through the
opening. There are different categories of spina bifida
including:
Occulta
The outer part of the vertebrae is not completely joined.
The spinal cord and covering (meninges) are undamaged.
There are often tufts of hair found at the site of the
defect.

Meningocele
The outer part of the vertebrae is split but the spinal
cord is normal. Only the meninges is damaged and pushed
out through the opening.

Myelomeningocele
The outer part of the vertebrae is split with the spinal
cord and meninges damaged and protruding from the
opening.

How does
it occur?
The cause of spina bifida is unknown, although genetic
and environmental factors have been implicated as
possible causes. The malformation of the spine occurs
within the first few weeks of pregnancy and in Australia
the incidence of spina bifida is two in 1,000. It is one
of the most complex of the congenital disabilities.
What are
the effects
Effects of spina bifida can include:
1.
Paralysis and loss of sensation
In the case of myelomeningocele the spinal cord protrudes
from the spine throughout pregnancy and is closed by
surgery shortly after birth. As a result the spinal cord
is almost invariably damaged and defective, the nerves
being disorganised and broken. As a result messages from
the brain (controlling and initiating movement) and those
from the body to the brain (giving the sensations of
touch, pain and position) are impaired. However,
paralysis, muscle weakness and loss of sensation occur
only at the level of the lesion and downward. Due to lack
of skin sensation and decreased mobility, skin tissue
breakdown may occur resulting in pressure sores. In most
cases the head, upper trunk and arms are not affected.
The level of impairment varies considerably depending on
the amount of damage and the location of the
lesion.
2. Lack of
bladder and bowel control (Incontinence)
The nerves that control the bladder and bowel are located
in the lowest region of the spinal cord. Consequently
incontinence is a major problem particularly in the case
of myelomeningocele. Lack of bladder control presents two
immediate dangers - infection and back pressure on the
kidneys which, without proper management, can lead to
renal problems. For more information, visit our
Incontinence page
3.
Hydrocephalus
Hydrocephalus literally means 'water on the brain' and is
a potentially dangerous condition involving the excessive
accumulation of spinal fluid within the brain caused
either by over production of the fluid or more usually by
an obstruction to its normal circulation. While it is a
complication of spina bifida occurring in approximately
90 % of cases, hydrocephalus is by no means exclusive to
spina bifida. For more information, visit our
Hydrocephalus page
Latest
research
Potentially, any woman could have a baby with spina
bifida. If there has never been a baby with spina bifida
in the family before, the incident is around 1 in 1000.
If there is a close family history, on either the mother
or father's side, the odds are much greater at around 1
in 25. If both parents have spina bifida the incidents
are approximately 1 in 4. Recent research has shown that
the chance of having a baby with spina bifida is
considerably reduced (up to 70%) if the intake of a
vitamin called Folate is increased at least 1 month
before pregnancy and for the first three months of
pregnancy. For more information, visit our
Folate
page.
Education
Although most children with spina bifida &/or
hydrocephalus are within "normal" IQ ranges, most will
have a variety of cognitive learning disorders. These
problems are primarily linked with hydrocephalus and the
Arnold Chiari malformation. For more information visit
our Education page.
Independence
Depending on the severity of disability, age and the
opportunities to socialise and mature in most cases the
child will be able to grow up and live an independent
adult life in the community.
Employment
More and more people with spina bifida &/or
hydrocephalus are seeking and gaining employment in a
wide range of areas in the workforce. Due to the advent
of agencies and laws promoting equal opportunities,
people with disabilities are encouraged to find
opportunities for employment. A number of people born
with spina bifida continue on to higher education such as
university and TAFE (Technical And Further
Education).