284 DISEASES OF THE BONES AND ARTICULATIONS. 



by the coronoid process pressing on the posterior portion of the eye, 

 it is bulged, causing what might be termed an incomplete prolapsus 

 of that organ. Other symptoms are salivation, great pain, rest- 

 lessness, blue coloration of the tongue. (For differential diagnosis 

 of paralysis of the lower jaw, see Diseases of the Mouth.) 



Theeapeutic Treatment. According to Stockfleth, the ani- 

 mal must be held by an assistant. The best method is to hold 

 him between the legs and steady his head while the operator by 

 means of a lever-like action upon the lower jaw endeavors to reduce 

 the dislocation. To accomplish this, wrap a cloth around the 

 hand, place the thumbs on both teeth of the lower jaw, and by 

 means of external pressure attempt to reduce the bone into its 

 normal condition. Another method which the author finds is not 

 as reliable consists in placing a strong stick between the jaws, as 

 far back as possible, then by pressure on the anterior portion of 

 the jaws, allowing the stick to act as a fulcrum, the jaw will very 

 often fly into position. In order to prevent a recurrence of this, 

 the dog for some time should wear a par- 

 "'' ^^' ticularly (Fig. 62) tight-fitting muzzle 



and should receive nothing but soft food. 

 Dislocation of the Blbo-w. In the 

 dog the bone of the forearm forms with 

 the elbow a pivot joint. Each of these 

 joints has a capsular ligament. The 

 upper is fitted with a ring-like band, 

 and in the lower portion the radius is kept in position by 

 means of transverse ligaments. A slight rotation of the radius 

 may occur independent of the elbow-joint itself. A dislocation of 

 this articulation may occur from jumping from tables, chairs, fall- 

 ing from some height. In the former case the bone of the forearm 

 is dislocated backward and outward. In dislocation of the lower 

 pivot joint the bone of the forearm may project forward as well 

 as backward. If dislocation of the upper joint occurs in the dog, 

 the forearm is kept flexed; it becomes immobile in the elbow-joint, 

 the animal using three legs and carrying one in the air. The joint 

 is wider, and the dislocated portion of the forearm may be felt 

 distinctly, also may see more or less marked sensitiveness or swell- 

 ing. If, on the other hand, we have a certain amount of move- 

 ment on extension of the el how-joint and great elasticity in the 



