Fig. 3From: Preoperative planning and surgical technique for optimizing internal fixation of posterior malleolar fractures: CT versus standard radiographsA second K-wire is inserted as a guide-pin for the screw in the correct trajectory angle in order to intersect and adequately stabilize the posterior malleolar fragment. The direction of this K-wire corresponds to the mean trajectory angle of the specific fracture type calculated on the axial CT cutBack to article page