An analysis of the results of 9 patients with a post-traumatic malalignment of the tibia, treated by an osteotomy and immediate bone grafting through a posterolateral approach is presented. Fixation was obtained with an external fixator in 8 cases and with a fibular plate in one case. Union was obtained in all cases after an average of 4.8 months. A significant improvement in the malalignment was obtained, especially in the frontal plane and somewhat less in the sagittal plane. Permanent sequellae due to the procedure were not noted.