Objective To investigate the effects of using arthroscopic osteochondral autografting for the treatmant of osteochondral defects of weight-bearing knee joint surfaces.Methods 7 cases were selected in osteochondral damages of the medial femoral condyle.2 mobile chondral fragments,and 3 synovial plica were removed,3 partial medial meniscectomies were performed using arthroscopic techniques.3~5 plugs were harvested in the superior medial femoral condyle,and replaced in the same holes in the medial femoral cond...