Editing Upper limb (section)

== '''Arteries''' ==

* '''Brachial''' - runs with median nerve in     medial side of anterior compartment. Proximal brachial artery first lies     posterior to coracobrachialis, close to the humeral shaft, then diagonally     crosses the medial part of brachialis belly.
** Branches
*** Profunda branch of brachial       joins the radial nerve and follows it through the lateral intermuscular       septum, then becoming the radial collateral artery.
*** Superior ulnar collateral       artery arises from the mid-point of the brachial artery and accompanies       ulnar nerve
*** Major nutrient vessel       brachial artery to humeral shaft
*** Bifurcates 1cm distal to       the skin crease of the elbow, at the level of the radial tuberosity (and       the intersection of brachioradialis and pronator teres muscles), into       radial and ulnar arteries.

* '''Radial     artery''' - direct     continuation of the brachial artery. In mid-forearm, lies beneath the     medial border of brachioradialis. At the wrist, lies between the tendons     of brachioradialis (lateral) and FCR (medial). Then across anatomical     snuffbox, close to cephalic vein, which is a convenient site for AVF     formation.

* '''Ulnar artery''' - larger branch, takes off     nearly at right angles to brachial artery. Becomes superficial in the     distal forearm at the lateral border of FDS. Accessible at the wrist on     the radial side of the FCU tendon.
** Gives off a very proximal      short common interosseous branch, which in turn bifurcates into dorsal      and volar interosseous branches and runs along either side of the      membrane.
* Hand arteries
** Variable circulation
** Forearm arteries terminate      in the superficial and deep palmar arches. Usually connected to both      radial and ulnar arteries, but some patients have disconnected      circulations. Radial artery occlusion/harvest may result in hand      ischaemia in 10% of patients.
** Ulnar artery is usually the      dominant artery to the hand