The Art of Horse-Shoeing: A Manual for Farriers

by William Hunting

Any neglect in these cases, such as working the horse after lameness has appeared, or delay in removing the offending nail, may lead to very serious changes in the foot, or even to death of the horse.

Another injury caused by nails is from a direct puncture of the sensitive foot. This may be slight, as in cases where the farrier in driving the nail misdirects it and so stabs the sensitive parts, but immediately withdraws the nail knowing what has happened. The lameness resulting from this is usually slight. Very much more serious is the lameness resulting from a nail which pierces the sensitive foot and is not recognised at once by the farrier. As a rule, lameness is immediate, and should the horse perform a journey before the nail is removed, serious damage is certain to follow.

Want of skill in driving a nail is not always the chief cause of "binding" or "pricking" a horse. More often than not the form and position of the nail-holes is the primary cause, for if the nail-holes in the shoe are too "coarse" or badly pitched it is quite impossible to safely drive nails through them. Sometimes the nails are defective, and this was much more common when nails were all hand-made. Bad iron or bad workmanship led to nails splitting within the hoof, and whilst one half came out through the wall the other portion turned in and penetrated the sensitive foot causing a most dangerous injury. The best brands of machine-made nails, now generally used, are remarkably free from this defect.

No lameness resulting from injury by a nail should be neglected. If detected and attended to at once few cases are serious. If neglected, the very simplest may end in permanent damage to the horse. By treating these accidents as unpardonable, horse-owners rather encourage farriers to disguise them or to not acknowledge them. If the workman would always be careful to search for injury and when he found it acknowledge the accident, many simple cases would cease to develop into serious ones. Frank acknowledgement is always best, but is less likely to take place when it is followed by unqualified blame than when treated as an accident which may have been accompanied by unavoidable difficulties.

From clips lameness may arise. A badly drawn clip is not easily laid level and flat on the wall. When hammered down excessively it causes pressure on the sensitive foot, and lameness. When side clips are used—one each side of the foot—it is not difficult to cause lameness by driving them too tightly against the wall. They then hold the hoof as if in a vice. When shoes get loose or are partially torn off the horse may tread on the clip, and if it be high and sharp very dangerous wounds result.

From the shoe, injury results from any uneven pressure, especially when the horny covering of the foot is weak and thin. The horn becomes broken and split, and the bearing for a shoe is more or less spoiled. Flat feet are liable to be bruised by the pressure of the inner circumference of the shoe at the toe. Lameness from this cause is easily detected by removing the shoe and testing the hoof with the pincers. If attended to at once, and the bearing of the shoe removed from the part little injury results. If neglected, inflammatory changes in the sensitive parts are sure to arise.

Corns in horses are due to bruising of the angle of the sole by the heel of the shoe. A wide open foot with low heels is most likely to suffer, but any foot may be injured. The most common seat of injury is the inner heel of a fore-foot. Even a properly fitted shoe may cause a corn if retained too long upon a foot, as then, owing to the growth of the hoof, its extremity is carried forward from beneath the wall so as to press upon the sole. A short shoe, fitted too close on the inside, is the most common cause of corn. To guard against the shoe being trodden on by the opposite foot the inside is generally fitted close, and to guard against being trodden on by the hind foot it is often fitted short. Thus to prevent accidents of one kind methods are adopted which, being a little overdone, lead to injury of another. A not uncommon error in the preparation of the foot for shoeing may also lead to the production of the so-called corn. If the wall on the inside heel be lowered more than it should be the horn of the sole is left higher than the wall, and then a level shoe presses unevenly upon the higher part.

A corn, be it remembered, is not a tumour or a growth, it is merely a bruise of the sensitive foot under the horn of the sole. It shows itself by staining the horn red, just as a bruise on the human body shows a staining of the skin above it. To "cut out a corn" with the idea of removing it is simply an ignorant proceeding. If a corn be slight all that is necessary is to take off the pressure of the shoe, and this is assisted by removing a thin slice or two of horn at the part. When the injury is very great matter may be formed under the horn, and of course must be let out by removal of the horn over it. Provided there is no reason to believe that matter has formed, a corn, i.e., the bruised and discoloured horn, should not be dug out in the ruthless manner so commonly adopted. Cutting away all the horn of the sole at the heels leaves the wall without any support. When the shoe rests upon the wall it is unable to sustain the weight without yielding, and thus an additional cause of irritation and soreness is manufactured. The excessive paring of corns is the chief reason of the difficulty of getting permanently rid of them. The simplest device for taking all pressure off a corn is to cut off an inch and a half of the inner heel of the shoe. With the three-quarter shoe ([Fig. 73]) a horse will soon go sound, and his foot will then resume its healthy state. The saying "once a corn, always a corn" is not true, but it is true that a bruised heel is tender and liable to bruise again, from very slight unevenness of pressure, for at least three months. All that is necessary is care in fitting and abstention from removal of too much horn at the part. Of course when the degree of lameness is such as to suggest that matter is formed the horn must be cut away so as to afford an exit for it, but the majority of corns are detected long before the stage of suppuration has resulted from a bruise.