DISEASES OP ARTICULATIONS 195 



1)6 no more than, placing the animal into another barn; good 

 fflod, lots of sunshine, no nndue exposure or excess of work, 

 hone dust and small doses of phosphorus are valuable 

 adjuncts. 



DISEASES OF ARTICULATIONS. 

 Arthritis. 



What is arthritis ? 



Inflammation of a joint. 

 What structures of a joint may he affected in arthritis ? 



The most important one is the synovial membrane. This 

 is a serous membrane encapsulating the joint and analogous 

 to the peritoneum or pleura. When inflamed it is termed 

 synovitis. But the inflammation of arthritis does not only 

 confine itself to the synovial membrane, but may involve the 

 bone, cartilage, ligaments and tissues about the joint. 



Depending on the cause of arthritis, what forms are recog- 

 nized ? 

 Traumatic, septic, infectious and aseptic arthritis. 



What other forms of arthritis occur f 



Arthritis the direct result of an assault is termed primary. 

 When the sequel of a contagious inflammation, it is known as. 

 secondary. It is termed hematogenous or metastatic -vhen 

 the irritant is carried,there by thfe blood, as in infectious dis- 

 eases; viz. : contagious pleuropneumonia, septicemia, etc. ; 



Aeccording to the course of the disease, what forms of arthritis- 

 are established ? 

 Acute and chronic arthritis. 



