Tscherne-Johnson extensile approach to the lateral tibial plateau. A, Elevate Gerdy’s tubercle with two osteotomies with bone cuts 90 degrees to each other. Base it on a posterior hinge behind Gerdy’s tubercle. B, Externally rotate the fragment leaving the posterior insertion of the iliotibial band attached. (Redrawn from Johnson EE, Timon S: Tscherne-Johnson extensile approach for tibial plateau fractures, Clin Orthop Relat Res 471:2760, 2013.) SEE TECHNIQUE 1.39.