236 



OPEEATIONS ON BONES. 



Fie. 261o.— Comminuted Fracture oJ aDor- 

 sal VertetesB at the Annular Portion. 



Fig. 261. — United Fracture of the Spi- 

 nous Proceasea o£ Doraal Vertebrse. 



progress which should at once excite the suspicion of the surgeon. 

 In the midst of a violent struggle the patient becomes suddenly 

 quiet ; the movement of a sharp instrument which at first excited 

 his resistance fails to give rise to any further evidence of sensation ; 

 perhaps a general trembling, lasting for a few minutes, will f oUow, 

 succeeded by a cold, profuse perspiration, particularly between 

 the hind legs, and frequently there will be micturition and defe- 

 cation. Careful examination of the vertebral column may then 

 detect a slight depression or irregularity in the direction of the 

 spine, and there may be a diminution or loss of sensation in the 

 posterior part of the trunk while the anterior portion continues to 

 be as sensitive as before. In making an attempt to get upon his 

 feet, however, upon the removal of the hobbles, only the fore part 

 of the body will respond to the effort,' a degree of paraplegia being 

 present, and while the head, neck, and fore part of the body wiU 

 be raised, the hind quarters and hind legs will remain inert. The 

 animal may perhaps succeed in rising and probably may be re- 



