CHRONIC SYNOVITIS—DROPSIES. 343 
VIl—Shéath of the Anterior Extensor of the Phalanges. 
Formed by the dropsy of the synovial which assists the sliding of the 
‘ttendon of the anterior extensor of the phalanges on the anterior face of 
‘the fetlock, this windgall, called Aygroma by some, is manifested by a soft, 
‘fluctuating, painless tumor, clearly bilobulated by the tendon of the ex- 
“tensor, when it is of large size. More common in hind than in fore legs, 
-it is seldom accompanied with inflammatory symptoms or lameness, but it 
is difficult to obtain its dissolution. ' 
Cool applications, pressure or even blistering 
-can be used only against recent and small wind- 
galls; at any rate, the results are only incom- 
plete. Cauterization even is not always suffi- 
“cient ; often we have seen the tumor resist to 
‘numerous and closed penetrating points, yet this 
‘treatment often succeeds for windgalls of small 
size. 
Simple puncture with the trocar is without 
-effect ; the tumor subsides temporarily and soon 
creturns by a new distension of the burs. Seéon 
‘run through, under the tendon, brings on recov- 
‘ery by suppuration of the pocket. vee incision 
acts in the same way. Rosenbaum, after having 
‘failed with several blisters, made an incision two 
inches long: suppuration formed, the wound 
-cicatrized and finally the tumor grew smaller. 
According to Rey, zodined injections is the best 
treatment. He says “this treatment has always 
given us success, without leaving any apparent 
mark ; it has specially the advantage of prevent- 
ng the return of the affection.” Out of some 
-hundred horses treated at the clinics of Lyon, ° 
“with iodined injections to the third, only ten 
‘failures were observed and not one complica- 
‘tion. Sometimes, however, there was a large Fig, 84.—Windgall of the 
‘swelling of the fetlock and some abscesses of hind fetlock. 
the subcutaneous tissue. Upon a first case 
treated with iodine pure, Verrier observed, for eight days, swelling and 
ssome pain; two months after there remained no indication of the trouble. 
In a mare with a windgall of the hind fetlock, he used the same treatment ; 
‘the result was the same; the animal was laid up but a few days; two 
amonths later the tumor had disappeared. Some time after, the treatment 
