[The value of 3-dimensional computed tomography in the preoperative evaluation of mandibular condyle fractures].

The recent expansion of surgical treatment for displaced condylar neck fractures should rely on a precise and careful preoperative radiological assessment. Two goals must be achieved. First the diagnosis must be confirmed by usually sufficient conventional imaging. Secondly, all the features of the fracture have to be analysed to come to the surgical decision and to choose the best osteosynthesis technique. Compared to traditional imaging, three dimensional computed tomography offers the possibility of a direct viewing. The extend of the fracture, the aspect and degree of displacement of the condylar fragment in relation to the ramus or the fossa are easily assessed. The examination and the integration of multiple axial or coronal bidimensional CT scan sections are no more necessary. The clearer perception of both the spacial relationships and delineation of these condylar fractures results in a better choice for surgical planning.