A growth rod distraction system a domino having first and second bores provided therein. First and second spinal rods are respectively disposed within the first and second bores for movement relative to the domino. First and second spur gears are disposed within the domino and respectively cooperate with the first and second growth rods such that rotation of the spur gears causes axial movements of the growth rods relative to the domino. The spinal rods may be formed either from a flexible polymer material (such as a PEEK, carbon fiber PEEK, PEAK, or similar medical grade polymer material) or a hybrid combination of such flexible polymer material and a metallic material (such as nitinol or similar medical grade metallic material). The spinal rods can also be used for fusion or non-fusion surgery of the spine to stabilize two or more vertebrae.
