Fig. 5

Ankle loading in knee varus. A Normal alignment of the hindfoot, B with the development of varus knee deformity, hindfoot goes into valgus, C correction of Varus knee deformity, reduces the hindfoot valgus but increases medial talar tilt and medial load-shifting (shown in Red). The outward arrow in B indicates the compensatory hindfoot valgus with development of knee varus. The inward arrow in C indicates the correction of tibia to its neutral alignment after mechanically aligned TKA and the decrease in hindfoot valgus