There may be a same mechanism of the left-right handedness and left-right convex curve pattern of adolescent idiopathic scoliosis.

The mechanism of the left-right handedness and pathogenesis of adolescent idiopathic scoliosis (AIS) is still unclear. We speculated that the pathogenesis of AIS may different from the mechanism of the laterality of convex curve pattern in AIS patients. This laterality may have correlation with the right dominance of handedness. The location and gravity of heart and aorta may determine the trend of lateral flexion and axial rotation of normal spine, which may be the reason of both left-right handedness and left-right convex curve pattern of AIS.