Scoliosis and Sex

AIS more prevalent, progressive in girls

Amy L. McIntosh, MD, and Jennifer M. Weiss, MD

The cause of adolescent idiopathic scoliosis (AIS)—curvature of the spine that measures greater than 10 degrees—is unknown. Although AIS affects both boys and girls older than age 10, AIS is more than 10 times more common in girls than in boys, with an overall ratio of 11:1.

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