322 VETERINARY SURGICAL OPERATIONS 



dissected from the periosteum of the os pedis and the peri- 

 chondrium of the lateral cartilage as far upward as the supe- 

 rior border of the latter. In other words, the upward dissec- 

 tion continues until the whole cartilage is exposed except a 

 small part that underlaps the incision posteriorly. This step 

 is sometimes complicated by pathological conditions. The 

 laminae may be found riddled with tracts, which renders 

 their dissection into a substantial flap quite impossible, and 

 the coronary cushion and the skin surmounting it may be 

 perforated by one or more openings, all of which make the 

 flap 3 very flimsy affair after all of the attached granulations 

 have been excised. 



Bayer carries the incision through the coronary cushion 

 anteriorly as well as posteriorly, making a symmetrical, 

 U-shaped, upward flap; but as the reunion of the coronary 



■ 

 Fig. 156 — Dark Line Shows Course ofMoore's Incision. 



cushion is one of the anxious anticipations, and since the 

 resection can be as well effected without it, the author rec- 

 ommends the method of Moore, which conserves to a cer- 

 tainty the continuity of the coronary cushion anteriorly. 



Moller and Frick dispense with the flap entirely by re- 

 secting and sacrificing the sensitive laminae covering the base 

 of the cartilage, and then resect the latter by a process of 

 excavation. (Fig. 160.) 



Third Step.— Resection of the Cartilage.— The best 

 method of removing the 'cartilage is to carefully shave it 

 down thinner and thinner with the scalped or sage knife, to 

 the underlying tissues, to the excellent advantage of the 

 Healing process and to the much greater safety to the sub- 

 jacent synovials. This method is slightly slower than the 

 resection of the cartilage in one or two entire pieces, but it 

 is by far the most satisfactory in the end. 



