Chondral injuries involving the knee are common. Chondral or osteochondral defects are observed in many occasions such as trauma, osteochondritis dissecans, and osteoarthritis disease. Chondrocytes are highly specialized cells. Articular cartilage is an avascular, aneural tissue with limited capacity for self-repair after injury. Although many varieties of treatment options for cartilage injuries, for instance joint lavage, tissue debridement, bone marrow stimulating procedure (i.e., subchondral drilling an...