What is chronic thrombosis of radial artery. how is it treated?

Blockage: It means there is a blood clot in the radial artery and it has been there for a while. Generally doesn't need treatment if you're not having any hand pain or non-healing wounds of the fingers. If you do, then a bypass may be required. More importantly is the cause of the clot in the first place. You should have a workup for clot that may have traveled from elsewhere or a clotting disorder. See pcp.