THE FRONT OF THE ARM 



I0 5 



nutrient foramen of the bone. When the nutrient artery 

 is not seen in its usual position it will probably be found in 

 the dissection of the back of the arm, taking origin from the 

 profunda artery. 



The inferior ulnar collateral artery (O.T. anastomotica) 



Radial nerve , 



Anterior branch 



of profunda 



artery 



Lateral inter- 

 muscular septum 



Inferior ulnar 



collateral artery. 



(O.T. ana- 



stomotic) 



Radial nerve 

 (O.T. musculo-spiral) 



Profunda artery 

 (O.T. superior profunda)- 



Ulnar nerve 

 Superior ulnar 

 "collateral artery 



Ulnar nerve 

 Superior ulnar.... 

 collateral artery 

 Nerve to medial 

 head of triceps" 



Medial intermuscular 

 septum 



Inferior ulnar 

 collateral artery" 



Triceps 

 ' (lat. head) 



( Nerve to lateral 

 'head of triceps 

 Nerve to long 



"head of triceps 

 Posterior 



"cutaneous nerve 

 of arm (O.T. 

 int. cutan. of 

 musculo-spiral) 



Dorsal cu- 

 taneous nerves 

 of forearm 

 I (O.T. ext. 

 v ! cutan. of 

 > musculo- 

 spiral) 



| Posterior 

 4 branch of pro- 

 \ funda artery 



fl Lateral inter- 

 *i- muscular 

 B septum 



Nerve to anconseus 



FIG. 44. Diagram to show relation of Radial, Nerve (O.T. Musculo-spiral) 

 to the Humerus, and of Vessels and Nerves to the Intermuscular Septa. 



arises about 50 mm. (two inches) proximal to the bend of the 

 elbow, and runs medially upon the brachialis. It soon divides 

 into a small anterior and a larger posterior branch. The 

 anterior branch is carried distally in front of the medial 

 epicondyle of the humerus, in the interval between the 

 brachialis and the pronator teres. It anastomoses with the 



