LAMENESS IN THE HIND LEG 257 



shoe is made thicker than the outer, altering the position of the 

 foot in this way. This is productive of desirable results. How- 

 ever, much depends upon the manner in which the foot in motion 

 strikes the weight-bearing member as to the corrective measures 

 that are indicated. This belongs to the domain of pathological 

 shoeing and the reader is referred to works on this subject for 

 further study of this phase of lameness. 



Lymphangitis. 



Excluding glanders, in the majority of instances, lymphangitis 

 in the horse, such as frequently affects the hind legs, is due to 

 the local introduction of infectious material into the tissues as 

 a result of wounds. However, one may observe in some instances 

 an acute lymphangitis which affects the pelvic limbs of horses 

 and no evidence of infection exists. Consequently, lymphangitis 

 may be considered as infectious and non-infectious. 



INFECTIOUS LYMPHANGITIS. 



Etiolog"y and Occurrence. — Traumatisms of the legs fre- 

 quently result in infection and when such injuries are near 

 lymph glands, even though the degree of infection be slight, 

 more or less disturbance of function of the muscles in the vicinity 

 of such glands occurs and lameness follows. 



The prescapular, axillary and cubital lymph glands when in a 

 state of inflammation, cause lameness of the front leg, and the 

 superficial inguinal and deep inguinal lymph glands not infre- 

 quently become involved also. Because of the location of these 

 lymph glands, they are subject to comparatively fre(|uent injury 

 and inflammation, causing lameness more often than other lynipli- 

 gland-affections. 



Small puncture wounds in the region of the elbow are often 

 met with. These may be inflicted when horses lie down ui)nn 

 sharp stumps of vegetation or shoe-calk injuries nuiy be the 

 means of introducing contaginm, and an infectious inflammation 

 results. A])scess formation, the result of strangles or other in- 

 fection in the prescapular glands, may l)e observed at times. 

 Following castration, the inguinal lymph glands may ])ecome 

 involved in an infectious inflannnation and locomotion is im- 



