Craniosacral work specifically targets these issues! Horses that have had CS will often need to have changes (positive ones) in their trims to accommodate the changes in their feet from the improvement in posture.
Correct the posture of the horse and the feet return to normal. Takes time, and the owner needs to address how the horse got out of posture in the first place, so as not to continue compounding the problem by accident.
I don't have a problem with putting shoes on the front feet, but I don't believe shoes are always the best choice for improving posture.