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. 2019 Jun 26;11(3):451–459. doi: 10.1111/os.12483

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© 2019 The Authors. Orthopaedic Surgery published by Chinese Orthopaedic Association and John Wiley & Sons Australia, Ltd

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Aseptic loosening of the distal femoral component in a 14‐year‐old male treated for an osteosarcoma using cemented fixation of the distal prosthesis. Frontal (A) and lateral (B) views of the distal femoral component after surgery show a centralized positioning of the stem, with a translucent band visible between the cement layer of the proximal prosthesis stem and the cortical bone. Frontal (C) and lateral (D) view of the distal femur obtained 37 months after the surgery, with the translucent band being larger than on the initial baseline radiographs obtained post‐surgery.