342 Surgical Diseases and Surgery of the Dog 



of the outer compact tissue is next chiseled away with a gouge or 

 curette to permit of inspection and direct treatment of the whole 

 of the disease cavity. All adjacent granulating tissue as well as 

 that which is necrotic is removed, and the cavity flushed out with 

 a corrosive sublimate solution (i : looo). Then the wound is either 

 packed with antiseptic gauze to stimulate the formation of granula- 

 tion tissue or the cavity is allowed to fill with blood by loosening 

 the tourniquet so that it may coagulate and become organized by 

 connective tissue. The latter is known as the Schede aseptic moist 

 clot method. It is described under Osteoplasty. In this case the 

 outer wound is immediately closed. This is the preferable way to 

 treat bone sinuses, but unless the parts are rendered perfectly asep- 

 tic, is apt to give trouble. When the packing method is followed, the 

 gauze is left in place a few days until granulation is well established, 

 the outer wound being in the meantime left open, but; protected with 

 antiseptic bandages. This method makes regeneration more pro- 

 tracted than the other. 



Osteitis Deformans. This is a rare diffuse form of osteo- 

 periostitis, affecting principally the bones of the skull and the long 

 bones of the extremities. It runs a very chronic course. The bones 

 become enlarged, soft, and spongy and covered by osseous vege- 

 tations. They are liable to become misshapen from bearing the 

 weight of the body in their weakened state. 



Kitt has described a similar condition in a one-year old Great 

 Dane, which he regarded as of myositic origin, since the vegetations 

 were confined to the areas of muscular insertion, the region of the 

 joints remaining free. The vegetations were limited to the lower 

 jaw and the lower extremities. 



Symptoms and Diagnosis. The disease is recognized by the 

 symmetrical uniform enlargement of the bones and by rheumatic 

 symptoms. In Kitt's case, besides the deformity of the affected 

 parts, there was little abnormal in the animal's ways, save an 

 unwieldy gait. 



Treatment. There is no known method of arresting the pro- 

 gress of this disease. 



RACHITIS. 



This disease, popularly known as "rickets," is characterized by 

 incomplete ossification of the skeletal structure in young animals 



