The radial recurrent artery is a small but clinically important branch of the radial artery that ascends to the lateral elbow, where it anastomoses with descending branches from the profunda brachii to form the lateral periarticular elbow anastomosis. This anastomosis provides collateral circulation around the elbow and is the basis for the lateral arm flap used in reconstructive surgery.
| Origin | Radial artery just below the bifurcation of the brachial artery |
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The lateral arm flap based on the radial collateral artery and its anastomosis with the radial recurrent artery provides a reliable fasciocutaneous free flap for head, neck, and extremity reconstruction. The flap includes the posterior cutaneous nerve of the arm, allowing sensory reconstruction when this branch is included in the flap design.
The radial recurrent-radial collateral anastomosis forms the vascular basis of the lateral arm free flap for reconstructive surgery.
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