The first passage is from Special Reports
on Diseases of the Horse by A. A.
Holcombe faults on conformation. The
second edited passage is taken from
Diseases of the Horse’s Foot by H.
Caulton Reeks on a disease in the horse’s
foot.
Passage 1
A large percentage of horses have feet
which are not perfect in conformation,
and as a consequence they are especially
predisposed to certain injuries and
5 diseases.
Flatfoot is that condition in which the
sole has little or no convexity. It is a
peculiarity common to some breeds,
especially heavy, lymphatic animals
10 raised on low, marshy soils. It is confined
to the fore feet, which are generally
broad, low-heeled, and with a wall less
upright than is seen in the perfect foot.
In flatfoot there can be little or no
15 elasticity in the sole, for the reason that it
has no arch, and the weight of the animal
is received on the entire plantar surface,
as it rests upon the ground instead of on
the wall. For these reasons such feet are
20 particularly liable to bruises of the sole,
corns, pumiced sole, and excessive
suppuration when the process is once
established. Horses with flatfoot should
be shod with a shoe having a wide web,
25 pressing on the wall only, while the heels
and frog are never to be pared. Flatfoot
generally has weak walls, and as a
consequence the nails of the shoe are
readily loosened and the shoe cast.
30 Clubfoot is a term applied to such feet as
have the walls set nearly perpendicular.
When this condition is present the heels
are high, the fetlock joint is thrown
forward, or knuckles, and the weight of
35 the animal is received on the toes. Many
mules are clubfooted, especially behind,
where it seems to cause little or no
inconvenience. Severe cases of clubfoot
may be cured by cutting the tendons, but
40 as a rule special shoeing is the only
measure of relief that can be adopted. The
toe should not be pared, but the heels are
to be lowered as much as possible and a
shoe put on with a long, projecting toe
45 piece, slightly turned up, while the heels
of the shoe are to be made thin.
Crookedfoot is that condition in which
one side of the wall is higher than the
other. If the inside wall is the higher, the
50 ankle is thrown outward, so that the
fetlock joints are abnormally wide apart
and the toes close together. Animals with
this deformity are “pigeon-toed,” and are
prone to interfere, the inside toe striking
55 the opposite fetlock. If but one foot is
affected, the liability to interfere is still
greater, for the reason that the fetlock of
the perfect leg is nearer the center plane.
When the outside heel is higher the ankle
60 is thrown in and the toe turns out. Horses
with such feet interfere with the heel. If
but one foot is so affected, the liability to
interfere is less than when both feet are
affected, for the reason that the ankle of
65 the perfect leg is not so near to the center
plane. Such animals are especially liable
to stumbling and to lameness from injury
to the ligaments of the fetlock joints. This
deformity is to be overcome by such
70 shoeing as will equalize the disparity in
length of walls, and by proper boots to
protect the fetlocks from interfering.
Passage 2
Definition. In veterinary surgery the term
‘corn’ is used to indicate the changes
75 following upon a bruise to that portion of
the sensitive sole between the wall and
the bar. Usually they occur in the fore-
feet, and are there found more often in the
inner than in the outer heel.
80 The changes are those depending upon
the amount of hemorrhage and the
accompanying inflammatory phenomena
occasioned by the injury.
Thus, with the hemorrhage we get
85 ecchymosis, and consequent red staining
of the surrounding structures. As is the
case with extravasations of blood
elsewhere, the hemoglobin of the escaped
corpuscles later undergoes a series of
90 changes, giving rise to a succession of
brown, blue, greenish and yellowish
coloration.
With the inflammation thereby set up we
get swelling of the surrounding blood
95 vessels, pain from the compression of the
swollen structures within the non-
yielding hoof, and moistness as a result of
the inflammatory exudate. In a severe
case the inflammation is complicated by
100 the presence of pus.
Classification. Putting on one side the
classification of Lafosse (natural and
accidental), as perhaps wanting in
correctness, seeing that all are accidental,
105 and disregarding the suggested divisions
of Zundel (corn of the sole and corn of
the wall) as serving no practical use, we
believe, with Girard, that it is better to
classify corns according to the changes
110 just described. Following his system, we
shall recognise three forms: (1) Dry, (2)
moist, (3) suppurating.
The dry corn is one in which the injury
has fortunately been unattended with
115 excessive inflammatory changes, and
where nothing but the coloration imparted
to the horn by the extravasated blood
remains to indicate what has happened.
The moist corn is that in which a great
120 amount of inflammatory exudate is the
most prominent symptom. It indicates an
injury of comparatively recent infliction.
The suppurating corn, as the name
indicates, is a corn in which the
125 inflammatory changes are complicated by
the presence of pus.