Fig. 1From: Comparison of different degrees of varus deformity correction with open-wedge high tibial osteotomy: a retrospective study over 5 yearsMeasurement of imaging indexes related to lower limb force line. A Hip–knee–ankle angle (HKA). B Weight-bearing line ratio (WBLR). C Posterior tibial slope (PTS). D Joint line convergence angle (JLCA). E Distal lateral femoral angle (LDFA). F Medial proximal tibial angle (MPTA)Back to article page