Osteochondral integration of multiply incised pure cartilage allograft: repair method of focal chondral defects in a porcine model.

Background: A focal cartilage lesion has limited capacity to heal, and the repair modalities used at present are still unable to provide a universal solution. Pure cartilage graft implantation appears to be a simple option, but it has not been applied widely as cartilage will not reattach easily to the subchondral bone.

Hypothesis: We used a multiple-incision technique (processed chondrograft) to increase cartilage graft surface.