From a farriery perspective "incorrect trimming or shoeing" is the worrying one. The standard of farriery does, as in any profession, vary. So also do theories of correctness. We do need to gain a better understanding of this problem and to test the various theories as to what is correct...
Some very brief thoughts on navicular
In my opinion navicular problems are commonly caused by misalignment of the bones of the the pastern and hoof (the phalanges) Long toes and or low heels cause these bones to form a curve, when viewed from the side at stance, instead of a straight line or...