Radial Artery (Full)

arteria radialis

The radial artery is the preferred site for arterial blood gas sampling and arterial line placement due to its superficial position at the wrist. It is the most commonly harvested arterial conduit for coronary artery bypass grafting. The Allen test confirms adequate ulnar collateral circulation before radial harvest. Its dorsal course through the anatomical snuffbox makes it vulnerable in scaphoid fractures and distal radius fractures.

Region: Forearm

Anatomical Data

Origin, Insertion & Supply

Origin	Bifurcation of the brachial artery at the antecubital fossa

Clinical Relevance

Clinical Notes

Radial artery harvest for coronary bypass uses the no-touch or skeletonised technique. Vasospasm during harvest is prevented with papaverine irrigation. Post-harvest radial artery occlusion occurs in 10% but is asymptomatic when the Allen test confirms adequate ulnar collateral supply. The radial artery free flap provides thin fasciocutaneous tissue for hand and tongue reconstruction.

Pathology

Common Injuries & Conditions

Radial Artery Laceration

Radial artery injury at the wrist from glass or knife wounds requiring microsurgical repair to restore palmar arch integrity.