LAMENESS. 



175 



It should always be borne in mind that the foot is an espe- 

 cially common seat of lameness. 



FROM BONE DISEASES. 



Bony growths. — Splints, spavins, ring-bones, etc., are simply 

 developments of bone tissue, the result of an inflammation of the 

 periosteum. These are all recognized as forms of unsoundness 

 and usually cause lameness. This inflammation may have its 

 origin in bruises or other injuries, or possibly the inflammation in 

 this tissue may be the result of an extending inflammation from 

 some adjoining tissue, but in any case the result is a projecting 

 development of bony tissue. 



FIG. 64. RINGBONES. (M. If. It.) 



1, Ringbone and sidebone, with general anchylosis. 



2, Ringbone and sidebone, with general anchylosis and marked bony en- 

 largement. 



3, High ringbone with anchylosis of first and second phalanges. 



4, Low ringbone with sidebone, and anchylosis of the second and third 

 phalanges. 



5, Ringbone with sidebone, and unilateral anchylosis. 



Splints. — These appear as small tumors along the metacarpal 

 bones usually at the junction of the large and small metacarpals. 

 They may be of various shapes and sizes, but are usually small. 

 They are generally more serious when located near the knee. 



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