LAMENESS IN THE HIND LEG 209 



twitchings and the leg was held off the floor and moved about 

 convulsively. Breathing was very much accelerated, pulse 85 

 per minute, the temperature was 103° and manipuhition of the 

 hips augmented the pain. 



This was not a paralytic condition and recovery resulted, yet 

 undoubtedly this was a ease which, if not properly cared for, 

 might have terminated unfavora])ly. 



Treatment. — Prognosis is decidedly unfavorable in paraly- 

 sis of the great sciatic nerve. If treatment is attempted, it is 

 to be conducted along the same general lines as in femoral 

 paralysis. Particular attention should be given to conditions 

 which will make for the patient's comfort, and as soon as it 

 is evident that the affection is not progressing favorably, the 

 subject should be humanely destroyed. 



Iliac Thrombosis. 



This condition is undoubtedly of more frequent occurrence 

 than we are wont to grant when one considers the comparatively 

 small number of cases that are actually recognized in practice. 

 It does not follow, however, that iliac thrombosis rarely exists. 

 Probably in the majority of instances there is insufficient obstruc- 

 tion of the lumina of vessels to provoke noticeable inconvenience. 

 Or, if circulation is hampered to the extent that function is 

 impaired and manifestations are observed by the driver, the 

 subject may be permitted to rest a few days and p.-^rtial resolu- 

 tion occurs, so that further trouble is not noticeable. 



As judged by lesions of the aorta and iliac "arteries in dissect- 

 ing subjects, the conclusion that arteritis and resultant disorders 

 are of rather frequent occurrence, is logical. 



Etiology. — Inflammation of the vessel walls and resultant 

 prolifieration of tissue together with the accmnulation of clotted 

 blood becoming organized, serve to obstruct the lumen of the 

 affected artery. The cause of arteritis is unknown in many 

 instances, but parasitic invasion and contiguous involvement of 

 vessels in some inflammatory injuries are etiological factors. 



Symptomatology. — A cluiracteristic type of lameness sig- 

 nalizes iliac thr()ml)osis and the following l)rief abstract from a 



