What is the Risser score used for in relation to adolescent idiopathic scoliosis?

The Risser score is primarily used to evaluate skeletal maturity in individuals, particularly in the context of adolescent idiopathic scoliosis. This scoring system assesses the level of ossification and development of the iliac apophysis, which is the growth plate found at the top of the iliac bones.

As the individual matures, the degree of ossification progresses, and this progression is categorized into scores ranging from 0 to 5. A score of 0 indicates no ossification, while a score of 5 signifies complete ossification and fusion of the iliac apophysis. In managing adolescent idiopathic scoliosis, determining the skeletal maturity using the Risser score is essential, as it helps predict the likelihood of curve progression and informs treatment decisions regarding surgical intervention or bracing.

The other choices, while related to scoliosis, do not accurately describe the function of the Risser score. The measurement of curvature pertains to the Cobb angle method, assessment of trunk rotation involves physical examination techniques like the Adam's forward bend test, and evaluation of skeletal maturity can also incorporate other factors beyond the iliac apophysis. However, the Risser score specifically focuses on the stage of skeletal maturity as evidenced by iliac apophyseal development.