Well, there are plenty of big arteries in the pelvis the surgeon could anastamose with, and you can harvest the donor artery as far up as you want (it supplies

Well, there are plenty of big arteries in the pelvis the surgeon could anastamose with, and you can harvest the donor artery as far up as you want (it supplies nothing else), so I'm not sure the arterial supply is really the problem. Venous drainage could be a problem. The other thing: they may actually plan to do those transplants down the line, but there's no sense in doing them if the scrotum fails to take.