Fig. 4A–B.

(A) A graph shows the knee valgus/varus moment. The dotted line represents a patient walking barefoot and shows an internal varus moment at the knee. The dashed line represents the same patient wearing bilateral solid AFOs and as a result the internal varus moment has been reduced. (B) A photo of a patient with spina bifida. Although there is a persistent lateral trunk lean, the valgus thrust has been reduced. An external medial buttress was added to the AFO and shoe selection included a wider sole base to address the valgus thrust at the knee.