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A 40-year-old male patient with ARCO stage IV ONFH at right received the treatment of BMSCs associating with porous tantalum rod implantation combined with vascularized iliac grafting. Radiographs were taken before operation (a), 18 months after operation (b), and 54 months after operation (c). (c) The femoral head remained circular, but collapse was found again in the femoral head.
