cavities. Treatment has not proved entirely satisfactory in the
majority of instances, perhaps because of tardy interference.

In a colt's leg sent the author by Mr. Thomas Millar, M.R.C.V.S.,
of Asquith, Saskatchewan, a careful dissection of the carpal region
revealed the fact that in this case the ruptured extensor tendon
was due to injury. The colt may have been trampled upon by its dam
in such manner that the tendon was divided. No noticeable evidence
of injury to the skin was to be seen on its outer surface, but on
the fascial side a cyanotic congested area, which was situated
immediately over the site of the ruptured tendon, was very
evident.

With the execution of a good surgical technic, the ruptured tendon
might be sutured; the wound of the tendon sheath as well as that of
the skin carefully united by means of gut sutures, the leg bandaged
and immobilized with leather splints and recovery follow in a
reasonable percentage of cases so treated. These cases afford an
opportunity for the perfection of practical means of treatment by
those who frequently meet with this affection.

Rupture of the Flexor Tendons and Suspensory Ligament.

Etiology and Occurrence.--Rupture of the flexor tendons or of the
suspensory ligament is of rare occurrence. Frequently, these structures
are divided as the result of wounds; but rupture, due to strain, is not
frequent.

[Illustration: Fig. 26--Extreme dorsal flexion said to have resulted
from an attack of distemper. From Amer. J'n'l. Vet. Med., Vol. XI, No.
4.]

In some cases in running horses, or in animals that are put to strenuous
performances, such as are jumpers, rupture of tendons or of the
suspensory ligament takes place. However, more frequently this follows
certain debilitating diseases such as influenza or local infectious
inflammation of the parts which results in degenerative changes and
rupture follows.

The non-elastic suspensory ligament receives some heavy strains during
certain attitudes which are taken by horses in hurdle jumping as is
explained in detail by Montane and Bourdelle[26] under the description
of this ligament. But in spite of the frequent and unusually heavy
strains, which these structures receive, complete rupture is not
frequently seen.

Symptomatology.--When the anatomy and function of the flexor tendons
and suspensory ligament is thoroughly understood,