Hi-lo and club foot are not the same. Dare I say every horse has some degree of hi-lo in that they have a "high" side
|where the arc of the hoof is higher, and a "low" side where the arc is lower. They will have one bigger shoulder, and one more well developed hindquarter (usually the "high" side).|
I agree with your farrier too regarding wedge pads, whether or not you're trying to jack up the 'low' side or treat bilateral collapsed heels. BUT for both feet I've found that sometimes(haven't tried it on enough horses to say whether generally, but seems likely...) a 'frog support' pad, providing extra protection & also support/pressure under the frog but NOT walls is helpful in both high heels & helps 'rehab' collapsed/underrun heels. It provides extra pressure/stimulation of the 'high' frog/caudal section, which is otherwise prone to becoming weaker & contracting due to lack of use. It can also provide support under the 'low' foot, to enable the heel walls to be relieved of excess pressure so they can start to relax down & back, becoming more upright & able to support the hooves.