This procedure is typically performed through an open incision; in some cases, it is performed arthroscopically. Osteochondral autograft transplantation involves transferring healthy cartilage tissue, called a graft, from one part of the knee to the damaged area. The graft is taken as a “plug” of cartilage and underlying bone.
A single plug of cartilage may be transferred or multiple plugs may be transferred in a procedure called mosaicplasty. Each plug is a few millimeters in diameter. When multiple plugs are moved to the damaged area, it creates a mosaic appearance.