other bad results will follow the execution of a good
technic and the treatment may be repeated every three or four weeks
until either marked regeneration of tissue is evident or the case is
obviously proved hopeless.
Paralysis of the Obturator Nerve.
Anatomy.--The obturator nerve, situated at first under the peritoneum,
accompanies the obturator artery through the obturator foramen and
gaining the muscles on the internal face of the thigh, terminates in the
obturator externus, adductors, pectineus and gracilis, also giving twigs
to the obturator internus (Strangeways).
Etiology and Occurrence.--This condition occurs upon rare occasions as
the result of injury such as falls which cause extreme abduction of the
legs, or in pelvic fracture where the nerve is directly injured, or
when melanotic tumors or other new growths compress the nerve in such
manner that its function is suspended. Paralysis of the obturator nerve
or nerves is met with rather frequently, notwithstanding, in mares,
following dystocia. The nerves (one or both) may become bruised at the
brim of the obturator foramen by being caught between the pelvis and the
body of the fetus in some cases of protracted labor.
Symptomatology.--In a unilateral affection there may be little
evidence of the trouble while the subject is standing; or there is to be
seen some abduction; or the affected member may present abduction of the
stifle and stand "toe outward." If the animal is walked there will be
manifested more or less abduction and the character of the impediment
varies according to the nature of the involvement.
Following protracted cases of labor in some instances where only a
unilateral paralysis exists, walking is performed with difficulty; the
subject may be unable to support weight with the affected member and is
obliged to hop on the one sound hind leg. In bilateral affections, they
are unable to rise. If the condition is severe the sling is required to
keep the subject standing, and with this care, recovery will follow.
Treatment.--If new growths or callosities or similar conditions affect
the nerve, little, if any, hope for recovery exists. In young and
vigorous subjects where cause is not definitely known, a course of
strychnin may be given. Good nursing, providing for the subject's
comfort and allowing moderate exercise, constitute rational treatment.
Stimulating embrocations on the abductor muscles resorted to in cases
during the incipient
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