A method and device for assisting reduction for complex fractures includes the steps of receiving an x-ray image of a fractured bone having a plurality of bone fragments, identifying structural aspects of at least one of the bone fragments, adapting a virtual bone model to the imaged bone based on the identified structural aspects, and generating an overlay of the virtual bone model onto the x-ray image, with the virtual bone model aligned to the identified structural aspects. The device is adapted to perform the method.