THE REGION OF THE ELBOW. 149 



depression, between it and the projecting inner condyle, 

 in which lies the ulnar nerve and posterior ulnar recur- 

 rent artery, passing between the two heads of the flexor 

 carpi ulnaris. The position of this nerve must be borne 

 in mind in resection of the elbow-joint, and it must be 



FIG. 23. 



Structures in relation with the anterior aspect of the elbow-joint. 1. Cephalic 

 vein. 2. Basilic vein and internal cutaneous nerve. 3. Musculo-spiral nerve. 

 4. Median nerve. 5. Brachial artery and venae comites. 6. Anastomotica magna. 

 7. Radial recurrent. 8. Median vein. A. Biceps. B. Triceps, c. Supinator 

 longus and extensor carpi radialis longior (the division between them is not 

 evident enough). D. Origins of flexors and pronators. E. Capsule of joint. F. 

 Extensor carpi radialis longior. G. Pronator teres. H. Supinator longus. i. 

 Tendon of biceps (beneath which and the capsule is the brachialis anticus). 



carefully isolated, and hooked out of the way in the 

 subsequent steps of the operation, to avoid injury. The 

 artery is only protected in this operation by the brachialis 

 anticus, so that after the bones are divided, the knife 



13 



