LAMENESS IN THE HIND LEG 203 



variation of position causes abnormal tenseness or looseness of 

 the skin over the region of the trochanter major. Rectal ex- 

 amination IP of aid in locating the head of the humerus. 



Treatment. — AVhen it is evident that a suhjeet should 1)e 

 given treatment and not destroj^d, the animal must be cast and 

 completely anesthetized. With complete relaxation thus secured 

 by rotation of the limb, using the hip joint region as a pivot, re- 

 duction may be effected. Traction is exerted in the same direction 

 from the acetabulum that the head of the femur is situated and 

 by pressing over the joint, the displaced bone may be returned 

 in position. If luxation is downward, traction on the extremity 

 will tend to dislodge the head of the femur from the inferior 

 acetabular margin making reduction possilile. 



The same general plan Avhieh is ordinarily employed in cor- 

 recting luxation is indicated here, but because of the heavy 

 musculature of the hip, complete anesthesia is imperative in all 

 such manipulations. 



Gluteal Tendo-S5movitis. 



The gluteus medius (g. maxinuis) muscle is inserted chiefly by 

 means of two tendons ; one to the summit of the trochanter major 

 of the femur and the other passing over the anterior part of the 

 convexity of the trochanter, and being attached to the crest be- 

 low it. The trochanter is covered with cartilage, and a bursa 

 (the trochanteric) is interposed between the tendon and the 

 cartilage. 



Etiology and Occurrence. — This affection is probably caused 

 in most instances 1)y direct injury to the parts, such as may be 

 occasioned by being kicked, falling on pavement, or being struck 

 by the body of a heavy wagon. Strains in pulling or in slipping 

 are undoubtedly causative factors and in draft horses such 

 strains may result in involvement of this synovial apparatus. 



Symptomatology. — Tf pain l)e severe and inflammation 

 acute, weight may not be borne with the affected member. There 

 is some local manifestation of the condition in acute cases. 

 Swelling of the tissues contiguous to the bursa is present and 



