Lameness of the Horse: Veterinary Practitioners' Series, No. 1Lacroix, John Victor
Science
Lameness of the Horse: Veterinary Practitioners' Series, No. 1
Lacroix, John Victor
Horses -- Health; Lameness in horses
Where there is an active and painful inflammation of the prescapular
lymph glands and contiguous structures, in some cases of "levator-humeri
abscess," the scapulohumeral joint is extended. This is brought about by
flexion of the elbow and carpal joints.
There are some cases of bi-lateral affections which occasion such pain
during weight-bearing that the subject shifts its weight from one
affected leg to the other; an example of this condition may be observed
in any acute case of gonitis which affects both patellar regions, making
it equally painful to bear the weight on either member.
A peculiar characteristic position is assumed in acute laminitis of the
fore feet. In such instances, the hind feet are brought forward under
the body sufficiently to relieve the front feet of the weight, insofar
as is possible by the abnormal position taken in cases of acute
laminitis.
So in each position that is abnormal to any degree, assumed by a
suffering animal, there may be deduced, the fact that the subject is
attempting to relieve the affected structures, and in each clinical
picture of this kind, the trained diagnostician sees some index to the
nature and source of the trouble. Further examination is rendered more
effective because of this preliminary visual examination which has
precluded the unnecessary annoyance of the animal by manipulating
unaffected structures.
It has been presupposed in the foregoing, that the one making visual
examination of a lame animal for diagnostic purposes, will remember that
with the normal animal the weight is borne equally well with both fore
legs; and that this is done without shifting from one to the other; and
that the pelvic limbs do not support the body in this manner. Normal
subjects shift their weight from one hind leg to the other and the one
relaxed, rests in a state of flexion with the toe on the ground and the
heel raised.
Examination by Palpation.
In nearly every case where lameness exists an examination of the
affected parts, by palpation or by digital manipulation, is necessary
before an accurate conclusion may be drawn; but in making this kind of
an examination one needs to exercise good judgment lest he fail to
acquire a correct impression of the actual existent conditions. There is
need for the diagnostician, here, as well as in other conditions where
physical examination is made, to approach the subject in a manner that
will not excite or disturb to the extent that the animal will, in one
way or another, resist or object to the approach of the diagnostician,
thereby masking the symptoms sought. The practitioner would best acquire
skill as a horseman--if he is not possessed of such--and handle each
individual subject in the manner calculated to best suit the temperament
of the animal examined. The unbroken subject is not handled as
satisfactorily as is the intelligent family horse; in the former, in
some cases, little dependence is placed upon digital examination.
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