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Geometrical approach to the end‐to‐side anastomosis

We analyzed the procedure of performing an arterio‐ or venotomy in rats and changed it from parallel to the long axis to perpendicular to the long axis. Simultaneously, geometrical analysis of the shape of an arterio‐ or venotomy led to a new approach for the end‐to‐side anastomosis in experimental free flap transplantation. This new method was applied in 268 anastomoses. It necessitated only six sutures and resulted in 100% arterial early and late patency and in 99% venous early and late patency.