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Algorithm for the management and treatment of patients with osteonecrosis of the femoral head. RF: Risk factors; ONFH: Osteonecrosis of the femoral head; FH: Femoral head; MRI: Magnetic resonance imaging; FHCD: Femoral head core decompression; NVBG: Non vascularized bone graft; BA: Biologic agents; VBG: Vascularized bone graft; OA: Osteoarthritis; THA: Total hip arthroplasty.
