Fig. 2.

Schematic drawings of the correct technique in which there is no articular step off after screw fixation through the predrilled screw holes. a After predrilling the screws at 60° in relation to the tibial axis, the osteotomy is made at 30° in relation to the tibial axis. A slice of bone is sacrificed when performing the osteotomy due to the saw blade thickness. b Introduction of the compression screws through the predrilled channels will result in a smooth joint surface