Profunda Brachi Artery

- Discussion:
    - first major branch of the brachial artery is the profunda brachii;
    - arises from the brachial artery high in the arm, about level w/ lower edge of the latissimus dorsi tendon (18-25 cm above the medial 
    - leaves brachial artery to pass posteriorly company w/ radial nerve ;
    - it runs along the spiral groove of the humerus;
    - throughout its course, profunda artery & its paired venae comitantes lie close to the radial nerve;
    - profunda vessels are overlaid by two heads of triceps (long & lateral head);
           - emerging from beneath lateral head of the triceps, vessels enter lateral intermuscular septum;
    - w/ proximal and posterior approach the triceps muscle is split between its lateral and long heads to expose the entire length of profunda 
           brachii vessels in the spiral groove;
    - lateral intermuscular septum, which runs from deltoid insertion to lateral humeral epicondyle, is formed by investing fasciae of triceps
            posteriorly and brachialis & brachioradialis anteriorly;
           - distal continuation of the profunda artery, the posterior radial collateral artery, runs within septum and gives off cutaneous branches 
                  throughout its length

Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Friday, August 19, 2011 12:54 pm