562 VETERINARY SURGICAL’ THERAPEUTICS. 
gait is shorter for some time. At rest, the left anterior leg is held. 
forward of the plumb line, resting on the plantar surface; in walk- 
ing, the movements of this leg seem stiff, and when the animal is tired, 
lameness appears. Towards the inferior part of the mass of the exten-- 
sors of the forearm, at the external face of the elbow, on a level with. 
the tendon of origin of the: external flexor of the metacarpus, there is. 
seen a bi-lobulated tumor whose great axis, measuring 12 centimeters, 
was running obliquely downwards and forward.. 
Both dilatations, separated by a slight depression, 
were hard, tense, when the leg was resting; they 
became less apparent and softer as soon as the leg 
was flexed. It was a hydarthrosis of the elbow, a. 
distension of the cul-de-sac which lines the tendon 
of the external flexor of the metacarpus ; the inferior 
dilatation had taken place in ‘front, the other back. 
of this tendon (fig. 114). With a capillary trocar, 
- an aseptic puncture was made on the lower pouch, 
which allowed the escape of about 150 grammes. 
of synovia. A blister was applied on the external 
face of the joint. Three weeks after, the dropsy 
had returned, causing a great stiffness of motion. 
With a new aseptic puncture and a deep pointed. 
firing on the external face of the elbow, the hy- 
darthrosis disappeared completely and the leg 
recovered the entire freedom of its movements. 
LT1.— Carpal Articulations—Articular Thoroughpins 
of the Knee. 
Besides the ligaments proper to each one, carpal. 
articulations are held together by four common 
Fig. 115.—-Hydarth- igaments, which allow the distension of the synov- 
fan ee a ials that line them, to take place only in given 
graph.) parts. The radio-carpal hydarthrosis is shown by 
the existence of two tumors: one, round in form, 
from a nut to a man’s fist in size, is situated on the external face- 
of the region, a little above the trapezium, between the posterior face: 
of the radius and the external flexor of the metacarpus (fig. 115) ; 
-it is formed through the narrow solution of continuity which exists. 
between the posterior common and the radio-suscarpal ligaments ; 
old, it is often indurated or calcified. The other occupies the anterior 
face at the junction of the knee and the forearm. Hydarthrosis of the 
-intercarpal joints gives rise to two or three hemispherical tumors, 
