Scoliosis in infants may occur when there spine was not formed correctly. This most commonly happens when one side of the side grows while the other side does not. This can happen in a condition called HEMIVERTEBRAE when one side of the spine does not exist or UNILATERAL BAR when multiple vertebrae are fused together on one side. In both cases the normal side grows while the abnormal side does not (or grows less) forming a curve. I hope this information helps. Good Luck!