What is the origin of the posterior interosseous artery?

The posterior interosseous artery is a terminal branch of the common interosseous artery, which itself arises from the ulnar artery.

What is the course of the posterior interosseous artery in the forearm?

It begins in the cubital fossa, passes posteriorly between the oblique cord and interosseous membrane, and travels between the supinator and abductor pollicis longus muscles, accompanying the posterior interosseous nerve.

What structures does the posterior interosseous artery supply?

It supplies the extensor muscles of the posterior forearm via muscular branches along its course.

How does the posterior interosseous artery terminate?

It ends by anastomosing with the anterior interosseous artery in the distal forearm, helping to vascularize the distal posterior region.

What is the interosseous recurrent artery?

It is a branch of the posterior interosseous artery near its origin that contributes to the arterial anastomosis around the elbow joint.

What is the relationship between the posterior interosseous artery and nerve?

The artery accompanies the posterior interosseous nerve as it travels between the supinator and abductor pollicis longus muscles in the forearm.

Posterior Interosseous Artery – Course & Anastomosis