A graft is an implantation of body tissue into a different situation, where it will grow its own blood supply and start to function in the new postion.
Osteochondral and Meniscal Allograft Transplantation in the Football (Soccer) Player. Görtz S, Williams RJ, III, Gersoff WK and Bugbee WD. Cartilage. 2012 Jan; 3(1 Suppl): 37S–42S.