THE SUPERIOR SURFACE OF THE NAVICULAR BONE. THE INFERIOR SURFACE OF THE SAME BONE.
Supposing the reader to be convinced of the justness of the writer's views, the treatment which these recommend shall be stated. Ulceration in any form proves the body to be weak or exhausted. Feed liberally, chiefly upon crushed oats and old beans. Attend to any little matter in which the horse's body may be wrong; but do little to the foot beyond, every other night, soaking it one hour in hot water, for the first fortnight. Afterward apply flannel bandages to the leg, put tips upon the hoofs, and wrap the feet up in a sponge boot, having first smeared the horn with glycerin. This, with a very long rest, is all it is in our power to accomplish. The rest, however, should be proportioned only to the proprietor's pocket or to his powers of endurance. In the first instance, six months' rest in a well-aired stable, and three subsequent months at slow agricultural employment, will not be thrown away, but will be likely to prevent future annoyances. After one relapse, the treatment is all but hopeless. The horse may be again restored to soundness; but the disease, which has with time gained strength, will be all but certain to reappear.
This, probably, may be the fittest place for stating the writer's reason for objecting to the treatment generally adopted.
Bleeding from the toe is decidedly objected to, because there never are any signs of inflammation present, but rather those symptoms which favor the belief that too little blood circulates within the foot. Blistering the coronet is more likely to augment the crusts than to reach the disease; and the tendency of navicular derangement is to thicken the horn. The same reasoning applies to paring out the foot and placing the hoof in poultices; it is more likely to act upon, and lead to activity in, the secreting membrane, which is near the surface, than to operate beneficially upon a remote joint. Objection is taken to the feet standing in clay, because the cold produced by evaporation is disposed to drive blood from the parts, which already have too little.
In extreme cases, neurotomy, or division of the nerve, is the only resort. For a detailed account of that operation the reader is referred to the next chapter. It permits the horse to be of some service to the master, and allows the animal an escape from the agonies of a cruel disease; it is, however, not final. It conceals the lameness; it rarely cures the disorder. The internal ravages may still go on; and, though the nerve of the leg has been properly divided, yet at an uncertain period nerves generally reunite, and the part which was deprived of sensation may become once more sensitive to pain. Moreover, no eye can look upon the internal ravage. Sensation destroyed in a foot tempts the horse to throw even more than its proportion of weight on a part weakened by disease. The bone has fractured, or the tendon has ruptured, under too sudden a test of their integrity.
For the above reasons, neurotomy is always most successful when early performed. In the primary state of the disorder, a restoration of the foot to its healthy functions has seemed to banish the affection. Pressure being given to the neurotomized organ, health has occasionally returned; and when the time has arrived for the reunion of the nerve, that event has been signalized by no reappearance of lameness.
But when the disorder has continued so long as to weaken the structures of the foot, operation is always attended with hazard. The nerve may be properly divided; the operation shall be admirably performed; still the parts, weakened by the joint actions of active disease and of long rest, have become disorganized. Pressure being suddenly restored, the debilitated structures could not sustain the restoration of that burden they were originally formed to endure. Rupture or fracture was the result; and the veterinary surgeon, despite his admirable talent, is disgraced by being obliged to order the immediate destruction of that animal which it was intended he should have benefited.
For the above reasons, and because the sound member is always disposed to exhibit the disorder which incapacitates one foot, never delay adopting the only chance of certain relief. If from pecuniary motives, or from better but mistaken feelings, the proprietor hesitates to subject his dumb companion to the surgeon's knife, never afterward should he repent of such a resolve. With delay the opportunity of benefit has passed; the operation, to be successful, should be resorted to upon the second appearance of acute and decided lameness.