112 



LABORATORY MANUAL OF HUMAN ANATOMY 



collaterale carpi ulnare) (0. T. internal lateral 

 ligament). 



(abd) Radial collateral ligament of carpus (ligamentum 

 collaterale carpi radiate} (0. T. external lateral 

 ligament). 



FIG. 44. 



V. Using the little 

 finger as an axis 



JII. Using the middle 



finger as an axis 



I. Using the thumb 



as an axis 



I 

 Supination Pronation 



Schema of pronation and of supination. 



On the right side of the figure are reproduced three tracings by the radius and the ulna in the 

 movements of pronation and supination, taking as an axis the thumb (7.) , the middle finger (///.) , and 

 the little finger ( V.) . (The larger curve belongs to the radius, the smaller to the ulna.) (From Poirier 

 et Charpy, Traite d'Anat. hum., Paris, 1899, 2 ed., t. i. p. 658, Fig. 665.) 



(b) What bony articular surfaces are concerned in the intercarpal articu- 

 lation? Study carefully the following: 



(ba) Joint-capsules (capsulae articular es) . 



(bb) Strengthening ligaments : 



(bba) Radiate ligament of carpus (ligamentum carpi ra- 



diatum}. 



(bbb) Dorsal intercarpal ligaments (Ligg. intercarpea dor- 



salia}. 



