Similarly to the muscles, the neurovasculature of the forearm can be conveniently categorized into anterior and posterior compartments.
Blood supply
The posterior compartment of the forearm is predominantly supplied by branches of the radial, anterior and posterior interosseous arteries.
Radial artery
The radial artery gives rise to muscular branches that supply the extensor muscles on the radial aspect of the forearm.
Interosseous arteries
The posterior interosseous artery originates from the common interosseous branch of the ulnar