The term scoliosis is used to describe a condition, which represents 
an abnormal curvature of the spine, but it is not a disease or a 
diagnosis. Scoliosis can be caused by congenital, developmental or 
degenerative problems, but most cases of scoliosis actually have no 
known cause, and this is known as 
idiopathic scoliosis.
Scoliosis
 usually develops in the thoracic spine (upper back) or the 
thoraco-lumbar area of the spine, which is between the thoracic spine 
and lumbar spine (lower back). It may also occur just in the lower back.
 The curvature of the spine from scoliosis may develop as a single curve
 (shaped like the letter C) or as two curves (shaped like the letter S).
While there are many forms of scoliosis, four of the most common ones include:
- Congenital scoliosis.
 This is a relatively rare form of congenital malformation of the spine.
 These patients will often develop scoliotic deformities in their 
infancy.
 
- Neuromuscular scoliosis. This may 
occur when the spine curves to the side due to weakness of the spinal 
muscles or neurologic problems.  This form of scoliosis is especially 
common for individuals who cannot walk due to their underlying 
neurolomuscular condition (such as muscular dystrophy or cerebral 
palsy).  This may also be called myopathic scoliosis.
 
- Degenerative scoliosis.
 Scoliosis can also develop later in life, as joints in the spine 
degenerate and create a bend in the back. This condition is sometimes 
called adult scoliosis.
 
- Idiopathic scoliosis.
 By far the most common form of scoliosis is idiopathic scoliosis, which
 most often develops in adolescents and typically progresses during the 
adolescent growth spurt.  Because it most often occurs during 
adolescence, this condition is sometimes called adolescent scoliosis.
 
Idiopathic scoliosis
This
 is by far the most prevalent form of scoliosis and occurs to some 
degree in approximately one half million adolescents in the US. There is
 no known cause of idiopathic scoliosis (“idiopathic” refers to a 
disease or condition or unknown origin) although it does tend to occur 
in families.
Idiopathic scoliosis is usually categorized into three age groups:
- From birth to 3 years old - called infantile scoliosis.
 
- From 3 to 9 years old - called juvenile scoliosis.
 
- From 10 to 18 years old – called adolescent scoliosis.
 
This last category, from 10 to 18 years old, comprises approximately 80 percent of all cases of idiopathic scoliosis.
The
 risk of curvature progression is increased during puberty, when the 
growth rate of the body is the fastest.  Scoliosis with significant 
curvature of the spine is much more prevalent in girls than in boys, and
 girls are eight times more likely to need treatment for scoliosis, 
because they tend to have curves that are much more likely to progress. 
Still, the majority of all cases of scoliosis do not require treatment.
It
 is important to note that idiopathic scoliosis results in spinal 
deformity, and is not typically a cause of back pain. Of course, people 
with scoliosis can develop back pain, just as most of the adult 
population can develop back pain. However, it has never been found that 
people with idiopathic scoliosis are any more likely to develop back 
pain than the rest of the population.
Symptoms and diagnosis of idiopathic scoliosis
People with a family history of spinal deformity are at greater risk for developing scoliosis. Early detection is essential.
There
 are several common physical symptoms that may indicate scoliosis. Any 
type of back pain is not usually considered a scoliosis symptom. Most 
typically, symptoms of scoliosis may include one or several of the 
following:
- One shoulder is higher than the other
 
- One shoulder blade sticks out more than the other
 
- One side of the rib cage appears higher than the other
 
- One hip appears higher or more prominent than the other
 
- The waist appears uneven
 
Frequently,
 a scoliosis curve in the spine is first diagnosed in school exams or in
 a regular check up with a pediatrician. Most students are given the 
Adam’s forward bend
 test routinely in school to determine whether or not they may have 
scoliosis. The test involves the student bending forward with arms 
stretched downward toward the floor and knees straight, while being 
observed by a healthcare professional. This angle most clearly shows any
 asymmetry in the spine and/or trunk of the adolescent’s body.
Because
 a scoliosis curvature is usually in the thoracic or thoracolumbar spine
 (upper back or mid back), if a rib hump or asymetry of the lumbar spine
 is found, or if the shoulders are different heights, it is possible 
that the patient has scoliosis. If this is the case, follow-up with a 
physician for a clinical evaluation and an x-ray is the next step.
- Physician’s exam.
 The clinical evaluation with the physician will usually include a 
physical exam, during which the physician will also test to make sure 
that there are no neurological deficits, which are uncommon but 
necessary to check for.
 
- X-ray. The x-ray is 
ordered to both confirm the diagnosis and check on the magnitude of the 
curvature. The x-ray will also give some indication as to the skeletal 
maturity of the patient.
 
In rare instances a physician may 
also request an MRI scan of the thoracic and/or cervical spine. If there
 are any neurological deficits that would indicate impingement of the 
spinal cord (e.g. hyperactive reflexes), if there is a left-sided 
thoracic curvature (they are almost always right sided), or if the child
 is very young (8 to 11 years old), an MRI scan is advisable to examine 
the possibility of an intracanal spinal lesion, which can cause 
scoliosis.
Depending on the results of the physician’s clinical 
evaluation and the diagnostic tests, a treatment plan will be 
recommended that may include observation, bracing, or possibly surgery.
Non-surgical treatment options for idiopathic scoliosis
Treatment decisions are primarily based on the 
skeletal maturity of the patient (or rather, how much more growth can be expected) as well as the 
degree of curvature.
 The cause of idiopathic scoliosis is unknown (idiopathic literally 
means "cause unknown"), but the way curves behave is fairly well 
understood. The younger the patient and the bigger the curve, the more 
likely the curve is to progress.
There are essentially three treatment options for adolescents with scoliosis: 
observation, bracing, and scoliosis surgery.
 There have been large trials of other forms of treatments, none of 
which have been shown to be effective. Electrical stimulation, physical 
therapy, chiropractic manipulation, osteopathic manipulation, or other 
manual treatments have not been shown to reduce the curvature or to 
prevent progression.
There is no reason to require a child to 
modify their activities, such as wearing their book bag on one shoulder 
or another, or to limit their activities, since activity does not affect
 the curve.
Because idiopathic scoliosis is considered a 
deformity, scoliosis treatment is largely centered on reducing or 
limiting the progression of the deformity and is not focused on 
treatment of pain.
Observation
 The curvature is measured on x-rays by what is known as the 
Cobb method, and this form of measurement is accurate to within 3 to 5 degrees.
Curves
 that are less than 10 degrees are not considered to even represent 
scoliosis but rather spinal asymmetry. These types of curves are 
extremely unlikely to progress and generally do not need any treatment. 
If the child is very young and physically immature, then the progress of
 the curve can be followed during the child's regular check up with his 
or her pediatrician. If the curve is noticed to progress beyond 20 
degrees, then the child should be referred to an orthopedic surgeon for 
continued treatment.
Curves that are between 20 to 30 degrees in a
 growing child can be observed at 4 to 6 month intervals. Any 
progression that is less than 5 degrees is not considered significant. 
If the curve progresses more than 5 degrees, then the curve will need 
treatment. Any curve over 30 degrees in a skeletally immature patient 
(child who is still growing) will need treatment.
Treatment for 
patients with progressing curves, or curves over 30 degrees in a 
skeletally immature patient, is usually centered on use of a back brace.
Back braces
 Bracing
 is designed to stop the progression of the spinal curve, but it does 
not reduce the amount of angulation already present. The majority of 
curve progression happens during a child's growth phase, and once the 
growth has ended, there is little likelihood of progression of a curve. 
Therefore, bracing is continued until the child is skeletally mature and
 finished growing.
The only curves that tend to continue to 
progress after skeletal maturity are those that are greater than 50 
degrees in angulation, so the treatment objective is to try to get the 
child into adulthood with less than a 50 degree curvature.
There are two types of commonly used scoliosis braces: a 
thoracolumbar sacral orthosis (TLSO) and a Charleston bending brace.
- The
 TLSO is a custom molded back brace that applies three-point pressure to
 the curvature to prevent its progression. It can be worn under loose 
fitting clothing, and is usually worn 23 hours a day. It can be taken 
off to swim or to play sports.
 
- A Charleston bending back brace 
applies more pressure and bends the child against the curve. It is worn 
only at night while the child is asleep.
 
Since bracing only 
works to stop the progression of the curvature in a growing child, it is
 not used for those children who are already skeletally mature or almost
 mature. It is only used for younger children (girls who are about 11 to
 13 years old, and boys who are about 12 to 14 years). If an older child
 has a curve greater than 30 degrees and is almost mature, his or her 
curvature will be treated with observation only, as there is little 
growth left and bracing will be unlikely to do much good.
Unfortunately,
 even with appropriate bracing, some spinal curves will continue to 
progress. For these cases, especially if the child is very young, 
bracing may still be continued to allow the child to grow before fusing 
the spine. Many times it is very difficult to predict which curves will 
continue to progress and need surgery later, especially if the child is 
young and skeletally immature. When in doubt, many physicians will 
recommend treatment with a brace.