Vanadurongwan, B. .; Vorathepputtipong, B. .; Harnroongroj, T. . Results of Necrotic Bone Removal and Replacement With Iliac Bone in the Treatment of Nontraumatic Avascular Necrosis of the Femoral Head Ficat Stage IIb and III. Siriraj Med J 2004, 56, 418-427.