A 2-stage distal femur reconstruction with expandable endoprosthesis in a pediatric patient presenting with a pathologic fracture through an osteosarcoma

@#<p style="text-align: justify;">Osteosarcoma in pediatric patients has traditionally been treated with amputation, especially if there is a pathologic fracture through the tumor.</p><p style="text-align: justify;">We report the case of a 12-year-old boy who sustained a pathologic fracture through distal femoral osteosarcoma. After neoadjuvant chemotherapy, he underwent limb saving surgery: wide excision of the osteosarcoma followed by a second-stage reconstruction with an expandable tumor endoprosthesis. He has a functional score of 93% and is free of disease 8 years since diagnosis and 2 years since the end of lengthening.</p><p style="text-align: justify;">This is the first reported case in Philippine medical literature of limb saving surgery in osteosarcoma reconstructed with an expandable endoprosthesis.</p>