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A: Preoperative magnetic resonance image showed ARCO stage IIc/CJFH Type L3 (the right hip) and ARCO stage IIb/CJFH Type C ONFH (the left hip); B: This Computed tomography scan was performed five years after being treated with impacted bone grafting with the addition of rhBMP2 and showed the complete repair of the osteonecrotic region, the amount of sclerotic bone was more improved and the articular surface remains intact without collapse.
