Figure 1.

Osteosarcoma of the distal femur treated with rotationplasty. A 5-year-old girl presenting with pain in the left thigh. (A) The plain a-p radiograph showed an osseous tumor (white arrow) of the distal left femur highly suggestive for osteosarcoma. Histopathologic analyses after open biopsy confirmed high-grade osteosarcoma. In MR imaging, it could be determined that it was located near vessels and nerves, respecting the epiphyseal plate. Due to the young age and the suitable location, we performed rotationplasty according to the technique of van Nes. Different techniques of rotationplasty have been proposed depending on the location of the tumor in the femur [47]. (B) Antero-posterior radiograph showing the osteosynthesis by means of an LCP plate in the subtrochanteric region. Clinical frontal (C) and lateral (D) image after wound healing.