Yeh, Kuei LinKuei LinYehLiaw, Chen KunChen KunLiawCHIOU-SHANN FUHCHU-SONG CHENChiang, Chen HaoChen HaoChiangShih, Kao ShangKao ShangShih2023-06-192023-06-192022-09-011010660Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/632861Background and objectives: Treatment of a displaced or comminuted periprosthetic distal femur fracture is challenging, especially in patients with osteoporosis. In this case report, we shared our successful surgical experience of using a long intramedullary fibula bone graft in a plate fixation surgery for a periprosthetic distal femur fracture in an extremely elderly patient with osteoporosis. Case report: A 95-year-old woman with severe osteoporosis (bone mineral density level: −3.0) presented with right knee pain and deformity after a fall, and a right periprosthetic distal femur fracture was identified. The patient underwent an open reduction and an internal plate fixation surgery with the application of a long intramedullary fibular bone graft. Due to a solid fixation, immediate weight-bearing was allowed after the surgery. She could walk independently without any valgus or varus malalignment or shortening 3 months after the surgery. A solid union was achieved 4 months postoperatively. Conclusions: We present a case wherein a long intramedullary allogenous fibula strut bone graft was used successfully to treat a right periprosthetic femur fracture in an extremely elderly patient. A long allogenous fibula bone graft can act not only as a firm structure for bridging the bone defect but also as a guide for precise component alignment. We believe this treatment option for periprosthetic fractures is beneficial for achieving biological and mechanical stability and facilitates early mobilization and weight-bearing for the patient.enallogenous fibula bone graft | distal femur fracture | osteoporosis | periprosthetic fracture[SDGs]SDG3journal article10.3390/medicina58091148361438252-s2.0-85138330635WOS:000856807300001https://api.elsevier.com/content/abstract/scopus_id/85138330635