ANALYSIS OF THE CONVULSIVE HAND. 157 



Let us now analyze this posture due to tetany, 

 and observe and describe the characteristic con- 

 stituents of the posture, and see if these elements 

 occur in other less-marked cases. 



The small parts, the digits, and the larger parts 

 are all in flexion; there is a general struggle among 

 the muscles, and the stronger move the bones ; the 

 nerve-centres appear to be all in activity, and the 



Fig. 19. The Hand in Fright. 



stronger prevail in causing the general flexion. 

 This posture is antithetical to the hand in fright. 



Hand in fright. Hand in convulsions. 



Wrist ...../.. Extended Flexed 



Metacarpo-phalangeals . . Straight extended 



First and second internodes ,, 



Thumb, metacarpo-phalan- 



^ 



internode ... 

 Phalanges, relative position 



All in same plane Contracted and 

 adducted. 



