Non-invasive methods and systems for treating adolescent idiopathic scoliosis (AIS) that is characterized as having a Cobb angle with an apex at the mid-level of the thoraco lumbar spine are provided. The methods and systems involve the application of an overcorrecting external distractive force to the spine, the force being transmitted via actuated crutches while the patient maintains a predator crouch position that is stabilized by a support and the crutches.
