A boot for treating laminitis in horses has a hoof casing snugly receiving an supporting a horny hoof wall of the laminitic hoof and a sole pivotally attached to the hoof casing such that the laminitic hoof may pivot with respect to the sole while the sole is planted on ground, thereby reducing stress on the inflamed laminae. A bearing assembly disposed between the hoof casing and the sole facilitates pivoting, and friction adjustment may be provided.
