Types of Scoliosis

Scoliosis is defined as lateral abnormal curvature of the spine. Broadly speaking, there are two types of scoliosis – nonstructural and structural

Nonstructural Scoliosis

In this type of scoliosis, the spine has a lateral curvature but there is no structural abnormality in the spine. The curvature is in response to habit or a disease process.

The spine is structurally normal with a lateral curvature, no spinal rotation, and no truncal asymmetry.


Types of nonstructural scoliosis:

  • Postural–  This curvature is due to prolonged use of a wrong posture. It resolves when the child is lies down.
  • Compensatory –  It is caused by leg-length discrepancy. There is no rotation of the vertebrae and it usually goes off on sitting.
  • Sciatic This curve results from trying to avoid pain from an irritated sciatic nerve
  • Inflammatory: Here a curvature in the spine is caused by an infective process such as an appendicitis. The body curves in response to the disease or abdominal muscle spasm.
  • Hysterical –  very rare and has an underlying psychological component

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