338 VETERINARY. SURGICAL. THERAPEUTICS. 
extensors, resulting from the dropsy of the synovials which assist the 
‘sliding of the tendons of the extensors of the metacarpus and of the 
phalanges in front.of the knee. 
The first is the most important. It is ordinarily characterized by three: 
swellings ; twosuperior, oblong, situated between the radius and the flexor 
muscles, one on the inner, the other on the outside; this last more dif- 
fused, more developed, and situated more posterioriy than that due to the- 
dropsy of the radio-carpal articulation. The third swelling is cylindroid, 
and situated along the flexor tendons, in the upper half of the cannon. 
Dropsies of the sheaths of the extensors occupy the anterior face of the 
knee; elongated according to the axis of the tendons, at times bilobulated, 
well distinct when they are of little dimensions, they may unite together: 
when they enlarge. Theirform, their situation, deeper than that of the 
hygroma, establish the differential diagnosis. Anterior articular dilatations 
of the knee are differentiated from them by their situation and their 
rounded aspect, like ‘“ marbles.” 
Against the carpal thoroughpin, lines or fine points cauterization are- 
used, with or without the puncture by the trocar. Jodined or phenicated 
injections, made aseptically, form a good treatment. The few accidents. 
mentioned are due to errors during the operations. Blisters are not advis- 
able, as rebel cutaneous fissures of the fold of the knee may follow. The 
free puncture with the cautery (Bruché) is now rightly ignored. 
Dropsies of the anterior tendinous sheaths rarely produce lameness. They 
are treated by fine points cauterization or by irritating infections (Dupon). 
Puncture with bistouri (Dard) is liable to complications. 
IV.—Sheath of the Large Gluteus. 
This very rare affection is the result of violent contractions of the gluteal 
muscles, or of the stretching of the tendon when the animal, in falling, 
for instance, has his leg engaged under him. 
The “ dog-walk,”’ body slightly curved sideways, the sound leg carried 
forward (Giinther), the shortening of the step in the lame leg, flexion of 
the joints when the animal is at rest; all those are signs that do not belong 
exclusively to that lesion. The local signs are, as MOller says, a marked 
sensation of crepitation (crepitant tenosynovitis); later atrophy of the 
muscles ; those are the true diagnostic signs. 
In recent and slight cases, recovery may occur rapidly by rest and con- 
tinued refrigeration. If the disease has a tendency to become chronic, 
or if it is already of long standing, blisters, lines or needle cauterization 
are indicated. When the atrophy of the muscle is marked, there remain 
little chances of recovery. Sometimes the inflammation of the burse is 
