I 10 



THE SUPERIOR EXTREMITY 



the pronator teres. The floor is formed by the distal part 

 of the brachialis muscle and the anterior part of the supinator. 

 Within the fossa are the termination of the brachial artery, 

 and the proximal parts of the radial and ulnar arteries, into 

 which it divides. To the lateral side of the main vessel 



Medial cutaneous nerve 



of the forearm 



Fascia of the arm 



Basilic vein A 



Brachial artery 



Medial cutaneous 

 nerve of the forearm 



Median nerve 



Volar ulnar recurrent 



artery 



Nerve to pronat. teres 



Ulnar artery 

 Lacertus fibrosus 



Pronator teres, deep head 



Flexor carpi radiali.s 



Palmaris longus - 



Medial cutaneous nerve 

 of the forearm 

 Basilic vein -- 



Lateral cutaneous nerve of 

 the forearm, volar branch 

 Cephalic vein 



Brachialis 



Lateral cutaneous nerve of 

 the forearm, dorsal branch 



Radial nerve 



Lacertus fibrosus 

 Radial nerve, 

 superficial branch 



Radial nerve, 



deep branch 



Tendon of biceps brachii 



Radial recurrent artery 

 Supinator muscle 



Brachio-radialis muscle 



-Radial artery 



Lateral cutaneous 

 nerve of the forearm, 

 volar branch 

 Cephalic vein 



Median vein 

 FIG. 47. Dissection of the Left Cubital Fossa. 



is placed the tendon of the biceps brachii, and to its 

 medial side, the median nerve. A quantity of loose fat also 

 is present. The ulnar artery leaves the space by passing 

 under cover of the pronator teres ; the radial artery is con- 

 tinued distally beyond the apex of the fossa, overlapped by 

 the brachio-radialis. The median nerve disappears between 

 the two heads of the pronator teres, and the tendon of 

 the biceps brachii inclines posteriorly, between the two bones 

 of the forearm, to reach its insertion into the radial tuberosity. 



