Objectives: A cadaver study was performed to provide anatomy evidence of the modified posterior-lateral approach (MPLA), and consecutive clinical series comparing modified with conventional posterior-lateral approach (CPLA) were evaluated to determine its superiority. Materials & Methods: Cadaver study. 15 adult cadavers (28 leg specimens) were measured. Briefly, top tip of the lateral malleolus was set as the starting point, the longitudinal axis of the fibula was set as the baseline, three anatomy points in trisection of 10 cm were recognized and marked from distal to proximal along the longitudinal axis of the fibula.