Beerekamp MSH, et al. - In terms of the quality of the reduction and fixation of calcaneal fractures, researchers determined the association of intra-operative fluoroscopic 2D- and 3D-images compared to postoperative CT-scans. In the EF3X-trial, patients who required open reduction and internal fixation (ORIF) of a calcaneal fracture were selected. There were a total of 102 calcaneal fractures. With the help of intra-operative 3D imaging, the implant position can be evaluated satisfactorily. Although intra-operative 3D imaging had a better agreement with postoperative CT-scanning than 2D-imaging, it is necessary to improve the image quality and suppress the dispersion of implants in order to improve the additional value of intra-operative 3D imagery in the reduction and fixation of calcaneal fractures.