Interpretation of upper extremity arteriography: vascular anatomy and pathology [corrected].

Understanding the utility and interpretation of upper extremity angiography is critical for the hand surgeon treating vaso-occlusive diseases of the hand. Although invasive and requiring the use of contrast dye, it remains the gold standard for imaging of the vascular system of the upper extremity. Angiography may detect numerous variants of the upper limb arterial system which may contribute to surgical pathology. Extensive vascular collateralization helps to maintain perfusion to the hand and facilitates reconstruction of the upper extremity. It is paramount to remember that angiography is a dynamic study and should represent a "flexible roadmap" for surgical reconstruction.