CHAPTER IX. 

 LESIONS OF NERVES OF UPPER LIMB. 



BRACHIAL NEURITIS. 

 PARALYSIS. 



Erb's. Lower Arm Type. Klumpke's. 

 Individual Nerves. 



Brachial Neuritis. In brachial neuritis, in addi- 

 tion to constant severe pain, there is tenderness along the 

 course of the nerves, whereas, in brachial neuralgia the 

 pain is not so continuous, and besides, the tenderness over 

 the nerves is wanting, although there may be some tender 

 points, such as, over the ulnar nerve behind the internal 

 condyle, or over the circumflex nerve, about the middle of 

 the deltoid muscle. In brachial neuralgia, associated 

 with angina pectoris, or with aortic aneurism, there would 

 be pain, but no tenderness. 



Erb's Paralysis. Paralysis from injury to the 

 roots of the brachial plexus follows generally the carry- 

 ing of weights on the shoulder, or a fall from a height, in- 

 juring the region of the side of the neck above the clav- 

 icle. In this variety, the roots of the fifth and sixth nerves 

 in front of the trapezius are injured, with the probable re- 

 sult of paralysis of the muscles supplied by those roots, 

 viz., the deltoid (circumflex), biceps and brachialis anti- 

 cus (musculo cutaneous), supra and infraspinati (supra- 

 scapular), and to some extent the serratus magnus (pos- 

 terior thoracic). 



Paralysis of the Lower Arm Type, i.e., paraly- 

 sis, the result of injury to the roots of the seventh and 

 eighth cervical and the first dorsal nerves. Here the arm 



