What distinguishes structural scoliosis from functional scoliosis?

The distinction between structural scoliosis and functional scoliosis primarily lies in their origins and characteristics. Structural scoliosis is typically a fixed condition, meaning the curvature of the spine is permanent and often a result of congenital factors or developmental abnormalities present from birth. This type of scoliosis does not change with positional variations or postural adjustments.

On the other hand, functional scoliosis develops as a response to other problems such as muscle spasms, leg length discrepancies, or poor posture. This form can often be corrected by addressing the underlying issues, which might involve physical therapy or correcting the external factors that lead to the spinal curvature.

Thus, the explanation for why structural scoliosis is associated with congenital issues and why functional scoliosis may be linked to postural habits or other temporary conditions reinforces the validity of the correct choice in identifying the nature of these two types of scoliosis.