Dissections of the rat omentum were performed to study the feasibility
of rat omental free transfer. The right epiploic vessels were found t
o be adequate for anastomosis in transfer. Twelve omental free flaps w
ere transferred to the groin, with 100% survival of flaps in the 10 an
imals that survived the operation. The artery and vein averaged 0.3 an
d 0.4 mm in diameter, respectively. The average pedicle length was 5 m
m, and the average flap weight was 136.9 mg. This omental transplant o
ffers a new experimental means of studying lymphedema, neovascularizat
ion, and tissue revascularization (C) 1994 Wiley-Liss, Inc.