Editing Upper limb (section)

== '''Cubital fossa''' ==

* Triangular space which forms     the transition between the arm and forearm
* '''Boundaries'''
** Superior - imaginary line      joining the medial and lateral humeral epicondyles
** Lateral - medial border of      brachioradialis
** Medial - lateral border of      pronator teres
** Roof - deep fascia of      forearm
** Floor - brachialis muscle      (medial) and supinator muscle (lateral)
* '''Contents''' (from medial to lateral)
** Median nerve
** Brachial artery and brachial      veins (venae comitantes)
*** Usually bifurcates 1cm       distal to elbow skin crease
** Tendon of biceps
** Radial nerve, which divides      into posterior interosseous branch and superficial branch
* The pronator teres muscle     weaves between the contents and is crucial to understanding the layout
** One head arises from common      flexor origin at the medial epicondyle, the other arises from the ulna.
** The deep head (ulnar head)      separates the median nerve and the ulnar artery
** The median nerve dives down      into the cleft produced between the two heads
** Pronator teres then inserts      to the lateral border of mid-radius after passing ''under'' the radial artery.

*