At various points throughout the year, I see an increase in deep central sulci, poor frog health and thrush.  Poorly frogs are a great concern to me, due to the wide range of issues that can potentially arise from a compromised frog. Beside addressing the cause (e.g. diet, metabolic issues, poor hygiene, biomechanical issues), I often recommend a topical treatment. The graphic shows how a horse who avoids using a sore frog/back of the foot will fall into patterns that create a vicious circle, from which it is difficult to get out of – e.g. a horse that has sore…