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. 2016 Jun 21;6:28227. doi: 10.1038/srep28227

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Copyright © 2016, Macmillan Publishers Limited

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Anteroposterior X-ray and computed tomography examination of a representative case of 29-year-old man with bilateral Association Research Circulation Osseous stage III osteonecrosis of the femoral head (ONFH) (A,B). Preoperative magnetic resonance image (coronal section, T1WI) of the patient showing bilateral necrosis of the bone marrow and the cortical bone. CJFH type is based on the three pillars. The bilateral sides are both type L3. Necrosis involves all three pillars (C). Porous tantalum implants were inserted in the bilateral hips to treat ONFH (D). Anteroposterior radiographic films showing that the bilateral hips progressed collapsed from ARCO stage III to ARCO stage IV 42 months after a porous tantalum implantation surgery (E). Two porous tantalum implants inserted in the bilateral hips required conversion to THA after 42 months (F).