RADIAL 



539 



ficial and deep fascia, to expose the vessel, and in addition in the upper third to 

 S('i»arate the supinator longus (huniero-radialis) from the pronator radii teres. 



In front, tlie artery is at first overlapped by the supinator longus, but for the 

 rest of its course it is niereh' covered by the skin, superficial and deep fasciae, by 

 some cutaneous veins, and by cutaneous branches of the musculo-cutaneous nerve. 



Behind, it lies successively from above downwards on the tendon of the l)iceps, 

 the supinator brevis, from which it is separated by a layer of fat, the insertion of 

 the pronator radii teres, the radial origin of the flexor sublimis digitorum, the flexor 



Fig. :io6. — Diagram of the Relation of the Arteries of the Left Forearm to 



THE Boxes. (Walsham.) 



Inferior profunda artery 

 Brachial artery 



Anastomotica mufftia artery 



Anterior ulnar recurrent 

 Posterior ulnar recurrent 



Ulnar artery 



Common interosseoi^ artery 



A nterior interosseous arteru 



Anterior ulnar carpal 



Superficial branch of ulnar artery 

 (superficial palmar arch) 



First palmar digital artery 



Superior profunda artery 



EXTERNAL CONDYLE 



-i. Articular 



branch of superior 

 profunda artery 



Radial recurrent artery 

 Interosseous recurrent artery 



Radial artery 

 Oblique ligament 



Interosseous membrane 

 Posterior interosseous artery 



Anterior radial carpal 



Radial artery at wrist 



Superficial volar branch of 

 radial artery 



Deep palniur arch 



longus pollicis, the pronator quadratus, and the front surface of the lower end of 

 the radius. It is in this last situation, where the artery lies upon the bone and can 

 therefore be easily pressed against it, that the pulse is usually felt. 



On its outer side it has, throughout the whole of its course, the supinator 

 longus or humero-radialis muscle, the guide to the artery in ligature, and the 

 external vena comes; in its middle third, the radial nerve as well. In its lower 

 third the radial nerve is to its outer side, but separated from it by the supinator 

 longus and fascia. 



On its inner side, in the upper third is the pronator radii teres, in the lower 



