(A) Arthroscopic finding from ALP showing OCD lesion separated from the femoral head. (B) Viewing from MAP, OCD fragment was removed by forceps through ALP. (C) Viewing from PMAP, OCD was fixed by three 2 mm K-wires through CROSSTRAC guide. (D) Cylindrical osteochondral autograft harvested from femur. (E) Pelvic AP view showing retrograde pinning of K-wires and bone tunnel for OAT. (F) Viewing from ALP, OAT was delivered and fixed through the tunnel by using bone tunnel dilator from greater trochanter.