46 



TOPOGRAPHICAL ANATOMY OF 



followed later down the rest of the limb to its ultimate insertion into 

 the tiexor area of the third phalanx. 



Accessoij carpal Ijone (pisiform) 

 M. extensor carpi uliiaris. 



I .\1. Ilexor carpi, 

 ulnari-^. 



— • M. extensor carpi uluaris 



Radius. 



Ulnar carpal bone 

 (cuneiform) . 



Fourth carpal bone - - — f- - 

 (unciform). 



Intermediate carpal bone 

 (lunar). 



Third carpal bone 

 (magnum). 



— M. extensor carpi radialis. \^ 

 . Third metacarpal bone. 



Fourth metacarpal bone. 

 Yia, 26. — Lateral Aspect of the Carpus, etc., with Area.s of Muscular Attachment. 



Intermediate caipal bone 

 (lunar). 



Ulnar carpal bone 

 (cuneiform). 



Fourth carpal bone 

 (unciform). 



M. extensor carpi ulnaris. - - 



Fourth metacarpal bone. 



Radius. 



Radial carpal bone 

 (scaphoid). 



Second carpal bone 



(trapezoid). 

 Third carpal bone 



(magnum). 

 Second metacarpal bone. 



M. extensor carpi/adialis. v 

 Third metacarpal bone. 



Fig. 27. — Dorsal (Anterior) Aspect of the Carpus, etc., with Areas of Muscular Attachment, 



The tendons of the superficial and deep flexor muscles are enclosed 

 in a common synovial sheath (vagina carpece) that extends upwards 



