248 PEINCIPLES OF VETERINARY SURGERY 



What symptoms does rupture of the triceps femoris produce f 

 Being tlie mainstay of the femoro tibial articulation, the 

 rupture of this compound muscle no longer holds the stifl& 

 up and the animal acts as in paralysis of the crural nerve as 

 it is seen in hemoglobinemia (azoturia) ; that is, it gives way 

 in all articulations of the leg. 



What sym,ptoms does rupture of the mastoido humeralis 

 cause ? 

 Swinging-leg lameness, being usually the result of some 

 contusion ; infection of that place often takes place, followed 

 by abscess formation at the site of rupture. 



What symptoms does rupture of the abdominal muscles pro- 

 duce ? 



It is followed by a hernia of variable size. 



Atrophy of Muscles. 



Give the etiology of muscular atrophy. 



Generally speaking, the true muscular elements may 

 decrease in size and numbers as the result of disuse, articular 

 diseases or interference with the nerve supply of the afPected 

 muscle, or of a generally depraved state of the blood. 



What forms of muscular atrophy are of interest ? 



Simple atrophy, degenerative atrophy, lipomatous 

 atrophy. 



What do you understand by simple atrophy ? 



A diminished size of muscles due to a decrease in size and 

 numbers of the muscular fibers, but without degenerative 

 changes of the fibers. 



