462 



VETERtNARY SURGICAL 6PfiRA*l6Ng 



often breaks down in the opposite fetlock and hock, becomes 

 emaciated and bedridden and frequently succumbs to ex- 

 haustion after having successfully escaped the first stages of 

 the indisposition. 



Dependent upon the acuity of the infection, the cases vary 

 in severity from the mild one that passes safely toward re- 

 covery without ever developing any more threatening 



Fig. 238— Dark Line In- Fig. 239— The Resection Complete, 



dicates Position of a, Anterior Wall of Frog after Excision. 



Incision through b, b, Section of Perforans Tendon. 



the Frog. c, Navicular Bone. 



d, Inferior Navicular Ligament. 



e, e, Semilunar Ridge. 



/, Exposed Part of Os Pedis. 

 g, g, Bars. 



k, Remainder of Frog. 

 h, Shoe. 



symptom than that of walking upon the toe for several weeks, 

 to the severe case that ends fatally after eight to ten days of 

 total disability and horrible suffering. Between these two 

 extremes are all the intermediate ones, some of which make 

 excellent recoveries from ordinary treatment after several 

 months, while others are left permanently lame. The de- 

 cision to submit a patient so affected to this operation (which 

 is by no means a trivial intervention) must not be a hasty 



