FRACTURE OF THE RADIUS AND ULNA . 



43 



very large. It is to be discovered by fixing the head of the bone, 

 and rotating the hand and forearm. 



The loiver extremity of the radius is often fractured, and fre- 

 quently mistaken for a dislocation of the wrist. (Fig. 3.) 



Fig. 3. 



Fractures of the radius are to be treated upon the same principles 

 and by the same means as in other fractures of the forearm, unless the 

 fracture should be through the articular surface of the carpal extre- 

 mity of the radius. This latter fracture gives a peculiar deformity to 

 the wrist, dependent upon a partial luxation of the cai-pus. In this in- 

 stance, besides the ordinary splints, two small compresses are to be 

 applied, one upon a prominence on the dorsal surface caused by the 

 fragment, the other upon the projecting extremity of the radius on 

 the palmar side. Of course these compresses will not be opposite 

 to each other. Passive motion should be established in a week, for 



Fig. 4. 



Fig. 5. 



