Brachiulis 



Brachio-radial 



Extensor carpi radial 

 long 



Extensor carpi radialis 

 brevis 



Dorsal interosseous artery 

 and nerve 



Extensor digitorum communi 



Abductor pollicis longus 

 and extensor pollicis brevis " 



Extensor pollicis longus J 

 Radius ' 



Dorsal carpal ligament 



Extensor carpi radialis brevis 



j 

 Radial artery / 



First dorsal interosseou 



Triceps 



Head of radius 

 Anconaeus 



Supinator 



Dorsal border of ulna 



Aponeurosis covering flexor 

 digitorum profunclus 



Extensor carpi ulnaris 



Extensor indicis proprius 



Tendons of extensor dig. com. 



Extensor digiti quinti 

 proprius 



FIG. 26. The Muscles on the Dorsal Aspect of the Forearm. The course 

 of the dorsal interosseous nerve, where it is not exposed to view, is 

 indicated by the interrupted line. The extensor digitorum communis, 

 digiti quinti proprius, and carpi ulnaris, have been divided and their 

 proximal parts elevated. 



74 



