Please correct me, I believe that in forefoot valgus, it’s eversion of forefoot with compare to rearfoot, but it’s long term compensatory motion will lead to a supinated foot, due to what it will lead to pressure on lateral aspect of foot, and clinically resembles as planus foot?

Anatomically, the forefoot and hind foot move opposite to each other. A medial wedge is recommended for forefoot varus to prevent any kind of adaptation at the hind foot which eventually will affect the other joints of the lower limb and ultimately, the gait – in other words, an eventual body compensation.

Forefoot varus leads to pronation as an eventual compensation. When the foot goes into pronation, it has to go down on the medial side – often excessively. A medial wedge will raise the medial side so the foot doesn’t have to fall too much into pronation on that side – the wedge allows the lateral foot to touch the ground sooner.

Rear foot valgus leads to calcaneal eversion which in turn causes pronation, talar Internal rotation (IR), tibial IR, genu valgum, femoral IR, coxa vara at the hip with resultant anteversion and increased Q angle.