An implant system for use in orthopaedic surgery for fixation of bone is provided. The implant system comprises an intramedullary nail, an extramedullary plate, and a bone fastener. The intramedullary nail has a connecting opening defining a first axis and a transverse opening defining a second axis and configured to receive the bone fastener. The extramedullary plate has a first through opening and a second through opening. The bone fastener is configured to penetrate the first through opening of the extramedullary plate and the transverse opening of the intramedullary nail. Further, the implant system comprises a connecting fastener configured to fasten the extramedullary plate to the intramedullary nail, the connecting fastener being adapted to be inserted through the second through opening of the extramedullary plate and the connecting opening of the intramedullary nail, wherein the first axis of the connecting opening of the intramedullary nail is oblique with respect to a longitudinal axis of the intramedullary nail and is substantially parallel to the second axis of the transverse opening of the intramedullary nail. Thus, the extramedullary plate can move in a direction substantially parallel to the longitudinal axis of the bone fastener towards the intramedullary nail.Linvention concerne un système dimplant destiné à être utilisé dans une chirurgie orthopédique pour la fixation dun os. Le système dimplant comprend un clou centromédullaire, une plaque extramédullaire et un élément de fixation dos. Le clou centromédullaire a une ouverture de liaison définissant un premier axe et une ouverture transversale définissant un second axe et configurée pour recevoir lélément de fixation dos. La plaque extramédullaire a une première ouverture traversante et une seconde ouverture traversante. Lélément de fixation dos est configuré pour pénétrer dans la première ouverture traversante de la plaque extramédullaire et dans louverture transversale du clou centromédullaire. E
