When the spine is in neutral, sidebending to one side will be accompanied by horizontal rotation to the opposite side.This law is observed in type I somatic dysfunction, where more than one vertebrae are out of alignment and cannot be returned to neutral by flexion or extension of the vertebrae.The involved group of vertebrae demonstrates a coupled relationship between sidebending and rotation.When the spine is neutral, side bending forces are applied to a group of typical vertebrae and the entire group will rotate toward the opposite side: the side of produced convexity. [3]Extreme type I dysfunction is similar to scoliosis.