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Scoliosis – Curvature of the Spine


Scoliosis is an abnormal curvature of the spine.  A healthy spine has natural front-to-back curves.  Scoliosis is a condition that describes side-to-side curvatures of the spine, that often also involves rotational deformities.  Some people are born with scoliosis, or it may result from neuromuscular conditions, osteoporosis, or unknown reasons (idiopathic scoliosis).

Scoliosis is a progressive condition that can become worse over time.  Untreated severe curvatures can cause medical complications.  Scoliosis may be monitored or treated with back bracing or surgery.


Your spine is made up of a series of bones called vertebrae.  There are different areas of the spine, defined by their curvature and formation.  Your spine has natural front-to-back curves.  Ligaments and muscles connect to the spine and provide stability and movement.

Your neck contains the cervical spine.  It is composed of seven small vertebrae.  Your chest area contains the thoracic spine, with 12 vertebrae.  The lumbar spine is located at and below your waist.  It contains five large vertebrae.  The remainder lower vertebrae in the spine are fused together or uniquely shaped in formation with your hip and pelvis bones.


Scoliosis is an abnormal curving of the spine.  With scoliosis, an abnormal curve occurs from side to side or from the right or left of the spine.  Some people are born with malformed vertebrae, unequal leg lengths, or fused ribs that cause congenital scoliosis.  Neuromuscular conditions, such as cerebral palsy, muscular dystrophy, spina bifida, and polio can cause poor muscle control, muscle weakness, or paralysis that leads to scoliosis.  If the cause of scoliosis is unknown, it is termed idiopathic scoliosis.  Idiopathic scoliosis tends to develop during a child’s growth spurts.  Most school systems provide routine scoliosis screening for children.  In adults, scoliosis may develop because of degenerative changes in the spine including osteoporosis.


Scoliosis causes the spine to curve to the side.  This may cause one shoulder or one hip to appear higher than another.  Your body may lean to one side and your shoulder blades may stick out.  You may experience back pain and fatigue.  A severe curvature can make it difficult to breathe or cause pressure on the spinal cord or nerves.  Arthritis in the spine may develop with aging.


As always, the diagnosis of scoliosis begins with a medical history. Your doctor will examine your spine and perform a neurological examination of the extremities.

X-rays are used to show and allow measurements of the curve in the spine.  X-rays are taken from the front and sides.  Magnetic resonance imaging (MRI) scans or CT scans may be used to provide more detailed images. 


Spine curvatures of less than 20 degrees are monitored frequently by a doctor but do not require treatment.  Back bracing may be used to treat curvatures that are 25 to 30 degrees.  There are many different types of back braces.  They work by using pressure to straighten the spine.
Back bracing is appropriate for children with idiopathic scoliosis that are still growing, but it does not work well for those with congenital or neuromuscular scoliosis.


Surgery is usually required for spine curvatures that are greater than 40 degrees.  Curves greater than 40 degrees have a high risk of getting worse, leading to potential complications.  Spinal fusion surgery is used to correct the curve in the spine and connect the vertebrae together.  The vertebrae are fused together with surgical hardware, such as rods and screws.  Temporarily, a back brace may be worn while the spine heals.  In some cases, additional surgeries may be necessary over time.


Recovery from bracing or surgical treatments is very individualized and depends on many factors, including the extent of curvature, age, and other medical conditions.  Your doctor will let you know what to expect.