Human Anatomy Vol 1

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UPPER LIMB

and in front of the elbow it is covered by the bicipital

aponeurosis and the median cubital vein (Fig. 8.9).

4 Posteriorly, it is related to:

i. The triceps brachii,

ii. The radial nerve and the profunda brachii artery.

5 Medially, in the upper part it is related to the ulnar

nerve and the basilic vein, and in the lower part to

the median nerve (Fig. 8.9).

6 Laterally, it is related to the coracobrachialis,

the biceps brachii and the median nerve in its upper

part; and to the tendon of the biceps brachii at the

elbow.

7 At the elbow, the structures from the medial to the

lateral side are:

i. Median ne e.

ii. Brachial artery.

iii. Biceps brachii tendon.

iv. Radial nerve on a deeper plane (MBBR).

Blqnches

Unnamed muscular branches.

The profunda brachii artery arrses just below the teres

major and accompanies the radial nerve.

Thesuperior ulnar collateralbrancharises in the upper

part of the arm and accompanies the ulnar nerve

(Fig. 8.10).

4 A nutrient artery is given off to the humerus.

Profunda brachii artery

Anterior and posterior

descending branches

Radial recurrent artery

from radial

lnterosseous recurrent artery

from posterior interosseous

5 The inferior ulnar collateral (or supratrochlear)branch

arises in the lower part and takes part in the

anastomoses around the elbow joint.

6 The artery ends by dividing into two terminal

branches, l}rte radial and ulnar arteries.

Anqstomoses oround the Elbow Joint

Anastomoses around the elbow joint links the brachial

artery with the upper ends of the radial and ulnar

arteries. It supplies the ligaments andbones of the joint.

The anastomoses can be subdivided into the following

parts.

ln front of the lateral epicondyle of the humerus, the

anterior descending (radial collateral) branch of the

profunda brachii anastomosis with the radial recurrent

branch of the radial artery (Fig. 8.10).

Behind the lateral epicondyle of the humerus, the

posterior descending branch of the profunda brachii

artery anastomosis with the interosseous recurrent

branch of the posterior interosseous artery.

ln front of the medial epicondyle of the humerus, the

inferior ulnar collateral branch of the brachial artery,

anastomosis with the anterior ul:rar recurrent branch

of the ulnar artery.

Behind the medial epicondyle of the humerus, the

superior ulnar collateral branch of the brachial artery

anastomosis with the posterior uhrar recurrent branch

of the ulnar artery.

Axillary artery

Teres major

Brachial artery

Superior ulnar collateral artery

Supratrochlear (inferior ulnar

collateral) artery

Anterior ulnar recurrent artery

Ulnar aftery

Posterior ulnar recurrent artery

Common interosseous

Anterior interosseous

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Radial artery

Fig.8.10: Anastomoses around the elbow joint