The present invention relates to a material, structure, and method for surgical use in traumatology. More particularly, the present invention relates to a composite material, a temporary biocompatible support structure, and related methods of use of the same in aiding osteosynthesis during healing of a bone fracture. The material keeps its strength in a solid phase in vivo and, to aid removal upon healing, can be transformed into a substantially fluid phase, including, for example, a pulverized state, by the application of energy at a chosen time.