PARALYSIS. 4II 
Paralysis of the external sciatic popliteal gives rise to symptoms, well 
<lescribed by Goubaux. At rest, either the digital regions are flexed and 
the fetlock rests on the ground, or the foot stands firmly and nothing in 
‘the attitude of the leg indicates a nervous lesion (fig. 96). In walking, 
the execution of the movements is regular in the upper segments of the 
Jeg and the extent of the step is normal, but the extension of the 
phalanges being impossible, the toe drags on the ground and sometimes 
seems deviated inwards. At the moment of putting the foot on the 
ground, the standing takes place normally or the digital region is flexed 
-on the cannon, and its anterior face as well as the fetlock rests on the 
Fig. 96.—Paralysis of the external popliteal sciatic nerve. (From a photograph.) 
ground ; in this way the tibio-metatarsal angle is open to extreme, the leg 
and cannon are in the same straight line. Flexion of the digital regions is 
often frequent during backing. If the paralysis lasts, and the subject is 
kept exercised, the wall is much worn at the toe. 
In a horse affected with this akinesia, after a violent contusion, 
‘Goubaux vainly tried blistering and cantherided pitch plasters on the course 
-of the nerve. The case of Bouley in his first observation recovered by re- 
. peated applications of charge of Lebas. We had only one case of this 
nature to treat; he got well in three weeks by a single blister on the 
Jeg and exercise. 
