The invention related to a distraction and damping system which combines two devices, namely a first distractor device and one or more other damping devices. The aforementioned distractor device is for children's bones and can support and lengthen said bones by means of rods which are mounted to an adjustment means. Moreover, said distraction and damping system is hooked to the bones at the ends of the rods which are connected to hooks. The above-mentioned damping devices consist of flexible and rigid means. The inventive system, which results from the combination of said two devices, comprises the implantation of novel means such as serrated rods, one of the ends of which takes the form of a piston head. Said system his intended to be used in order to straighten and support a child's torso and his/her vertebral column, by acting on the central means by tightening the screws; dampen dynamic loads; be adjustable according to growth, the system being re-adjusted as often as necessary; and prevent significant stresses from being created in the bones, in particular, at the hooks, without impeding growth.