LAMENESS IN THE PORE LEG «7 



and any form of nlnar fracture is serious because of its function 

 and position in relation to the joint capsule. Transverse frac- 

 tures do not readily unite because of the tension of the triceps 

 muscles, which prevent close approximation of the broken ends 

 of the bone. 



Thompson^, however, reports a case of transverse simple frac- 

 ture of the ulna in a mare, the result of a kick, in which com- 

 plete recovery took place. He kept the subject in a sling for 

 six weeks and then allowed six months rest. 



Symptomatology. — The position assumed by a horse sutfer- 

 ing from a transverse fracture of the ulna, is similar to that in 

 radial paralysis. Crepitation may be detected by manipulating 

 the parts, and in some instances of fracture of the olecranon, 

 there occurs marked displacement of the broken portions of the 

 bone. Lameness is intense and the parts are swollen and super- 

 sensitive. The capsular ligament of the elbow joint is usually 

 involved in the injury because fracture of the ulna may directly 

 extend within the capsular ligament. In such cases, there is 

 synovitis, and later arthritis causes a fatal termination. 



Treatment. — The impossibility of applying a bandage in any 

 way to practically immobilize these parts in fracture of the ulna, 

 prevents our employing bandages and splints. Therefore, one 

 can do little else than to put the patient in a sling and try to 

 keep it quiet and as nearly comfortable as circumstances allow. 



Fracture of the Radius. 



Etiology and Occurrence. — From heavy lilows received such 

 as kicks, collision with trees or in falls in runaway accidents, the 

 radius is occasionally fractured. In very young foals, fracture 

 of the radius, as well as of the tibia and other bones, results 

 from their being trampled upon by the mother. 



Symptomatology. — Excepting in some cases of radial frac- 

 ture of foals where considerable swelling has taken place, there 

 is no difficulty in readily recognizing this condition. The heavy 

 brachial fascia materially contri])utes to the support of the ra- 



iPractures, bv H. Thomp.son, Paxton, III., American Veterinary Review, 

 Vol. 15, p. 134. 



