Human: What's the most common form of scoliosis? Assistant: 
The most common form of scoliosis is called Adolescent Idiopathic Scoliosis (AIS). It affects about 2% of children and adolescents. AIS is a three-dimensional deformity of the spine that typically begins during puberty, when the body is growing rapidly. In some cases, it can be caused by a genetic predisposition or an underlying health condition.