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Index of Scoliosis Information
Causes of Scoliosis
In 80 to 85 percent of people, the cause of scoliosis is
unknown; this is called idiopathic scoliosis. Before concluding that a person
has idiopathic scoliosis, the doctor looks for other possible causes, such as
injury or infection. Causes of curves are classified as either nonstructural or
structural.
Nonstructural (functional) causes of scoliosis
A structurally normal spine that appears curved. This is a temporary,
changing curve. It is caused by an underlying condition such as a difference in
leg length, muscle spasms, or inflammatory conditions such as appendicitis.
Doctors treat this type of scoliosis by correcting the underlying problem.
Structural causes of scoliosis
A fixed curve that doctors treat case by case. Sometimes structural scoliosis
is one part of a syndrome or disease, such as Marfan's syndrome, an inherited
connective tissue disorder. In other cases, it occurs by itself. Structural
scoliosis can be caused by neuromuscular diseases (such as cerebral palsy,
poliomyelitis, or muscular dystrophy), birth defects (such as hemivertebra, in
which one side of a vertebra fails to form normally before birth), injury,
certain infections, tumors (such as those caused by neurofibromatosis, a birth
defect sometimes associated with benign tumors on the spinal column), metabolic
diseases, connective tissue disorders, rheumatic diseases, or unknown factors
(idiopathic scoliosis).
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