The deep brachial artery or profunda brachii artery is a large branch of the brachial artery, located in the arm.
- origin: brachial artery
- location: posterior aspect of the arm
- supply: triceps brachii
- main branches: middle collateral and radial collateral arteries
The deep brachial artery courses through the radial groove close to the radial nerve, first between the long and medial heads and then deep to the lateral head in the spiral groove before it divides into its terminating branches 1,2.
The main branches of the deep brachial artery are its two terminal branches, the middle collateral and radial collateral arteries 1,2. They arise in the posterior muscle compartment at the middle part of the arm.
The origin of the deep brachial artery may vary. It may arise at the same origin of the posterior circumflex humeral artery (separately), or from the axillary artery, either proximal to the lattismus dorsi tendon or at the distal aspect of the artery 1.