The radial artery that supplies blood to the neophallus must be connected to the artery in the groin area under a microscope, using sutures about one-fourth the thickness of a human hair. The same suturing must be done to veins alongside the radial artery, to direct blood flow into the groin. Blood clots are common, since even trivial injuries to the lining of the vessels will cause platelets to stick. A clot can cause the graft to fail, creating an open wound that, because of inflammation, cannot be sutured closed.
