We know these problem hooves by a variety of names: low heels, crushed heels, collapsed heels, underrun heels, long-toe/low-heeled feet. Regardless of what they're called, we've probably all known a horse that had them, the less-than-fluid gait and/or lameness that often accompanies them, and the farrier/vet bills that come with trying to fix them.

Foot with grade II negative palmar angle syndrome

Foot with grade II negative palmar angle syndrome (red line shows palmar angle)

Grade II NPAS

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