<qa>  What is the ICRS Grade 3a, 3b, 3c, 3d of4. Pretreatment arthroscopic confirmation indicating one or two contained or uncontained lesions and equal to an ICRS Grade 3a, 3b, 3c, 3d of the femoral condyle or trochlear groove and OCD Osteohondritis dissecans lesions Grade 4a with healed bone base, which is non-sclerotic and no loss of bone greater than 6mm measured from the surrounding subchondral plate. Original pretreatment arthroscopic confirmation indicates that one or two lesions are equal to an ICRS Internation Cartilage Repair Society Grade 3a, 3b, 3c, 3d contained lesions that is equivalent to an Outerbridge Grade III or IV greater than 50 loss of articular cartilage. 