178 PEINOIPLES OP VETERINARY SURGERY 



cervical and lumbar vertebrae are tliose most exposed to 

 fractures, which, leading to paralysis, leave no hope for a 

 successful treatment. 



13. Fracture of the ribs. Usually more than one rib is 

 broken. A favorable prognosis can be offered unless such 

 complications as pleurisy or pneumonia are present or to be 

 expected. This fracture exceeds 'in frequency those of the 

 vertebral column. 



14. Fracture of the sternum. Seems to be exceedingly 

 rare. 



luflanunatiou of Bone. 



From a practical standpoint, which are the most important 

 structures involved in bony inflammations ? 

 The most important is the periosteum in animals ; next, 

 the osseous tissue proper ; finally, the marrow. 



How do you term inflammation of the periosteum, hony sub- 

 stance and marrow ? 

 Periostitis, osteitis, osteomyelitis. 



Do inflammatory processes of hones differ materially from 

 those of soft parts ? 



They do not, since the osseous tissue exhibits no material 

 difference from the soft parts, practically speaking, being 

 soft parts rendered firm by the addition of lime salts. For 

 this reason injuries and diseases of bones are, on the whole, 

 of like character and run about the same course as similar 

 injuries and diseases of soft tissues. 



Depending on the course of the disease, what variety of inflam- 

 mations are considered in bony inflammations f 

 These inflammations run either an acute or chronic 

 course. 



