Anatomo--morphological peculiarities of greater omentum (GO) in 63 patients, in whom its flap was applied for revascularization of ischemized tissues of extremities, myocardium and the brain, were studied up. Microsurgical transplantation of the GO free flap was performed in 41 patient, omentocardiopexy without the break of the GO vascular pedicle--in 22. Possibilities of the GO application for the ischemized organs revascularization were estimated.