Scoliosis is an abnormal curvature of the spine, or backbone. Instead of a straight vertical line from the neck to the buttocks, the spine has a C- or S-shape. This can result in uneven shoulders and hips.

Scoliosis
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In most cases, the cause of scoliosis is unknown. Sometimes it is related to a congenital birth defect, disease, or infection. It usually develops in childhood before puberty, though it may not be diagnosed until the teen years. Scoliosis is classified by the age at diagnosis:

  • Infantile scoliosis: younger than three years old
  • Juvenile scoliosis: 3-10 years old
  • Adolescent scoliosis: from age 10 to end of growing period

Occasionally, the spine curvature of scoliosis is due to a muscle imbalance rather than a spinal deformity.