434 



PRA CTICAL ANA TOMY. 



On the posterior surface are the three extensors of the thumb, and the posterior 

 interosseous nerve and vessels. An upper st?ong band of this membrane is called 

 the oblique ligament. (Fig. 303.) 



Upper edge 

 of inter- 

 osseous 

 membrane 



FIG. 303. INTERNAL VIEW OK 



Anterior radio-ulnar 

 ligament 



Internal lateral liga- 

 ment of wrist 

 Flexor carpi uluaris 



External lateral ligament 



of wrist 

 Anterior radio-carpal 



ligament 



Tendon of flexor carpi 

 radialis 



Capsular ligament of first 

 oarpo-metacarpal joint 



FIG. 304. ANTERIOR VIEW OF \\ KISI. 



THE INFERIOR RADIO-ULNAR ARTICULATION. 



1. Class. Diarthrosis, because of free motion and a capsule. 



2. Subdivision. Ginglymus, because of motion in two directions only. 



3. Technical Name. Inferior radio-ulnar articulation ; common, none. 



4. Ostcologieal I 'nits. Radius and ulna. 



5. Snl>tJr t 'isioii(i/ /W/'/.v. Head of ulna, sigmoid of radius. (Fig. 246.) 



