24:2 PEINCIPLES OP VETERINARY SURQERT 



Which muscles are especially exposed to traumatic m,yositis f 



In the horse, the mastoido-humeralis, on account of its 

 prominent position, giving rise to a marked shoulder lame- 

 ness. In swine and cattle, when shipped by rail, and espe- 

 cially when an undue number is put into a car, contusions are 

 common, especially of the muscles of the shoulder, croup and 

 breast. 



What are the symptoms of traumatic serous m,yositis ? 



A circumscribed painful area, with more or less swelling, 

 impaired function and increase of temperature of the parts. 



Outline the treatment of traumatic serous myositis. 



Rest, hot applications ; later, stimulating liniments where 

 the rubbing of the parts — that is, massage — is the most impor- 

 tant therapeutic point ; blisters. 



PURULENT MYOSITIS. 



What are the causes of pv/rulent myositis ? 



This form starts with an infection of a wound of the mus- 

 cular tissue, either leading to a phlegmonous myositis or 

 abscess formation. 



What changes take place in the Tuuscular tissue in pv/rulent 

 Tuyositis f 



The perimysium becomes necrotic, the adjoining fascia 

 may undergo necrosis and the muscular fibers die ; the necrotic, 

 area varying in extent according to the intensity of the infec- 

 tion. Thus results either a diffused septic cellulitis or simply 

 an abscess. 



W hat important sequels are UTcely to follow pv/rulent myositis f 

 Septicemia, pyemia, fistulse, abscess. 



