Original biological reconstruction of the hip in a 4-year-old girl

We resected the proximal femur in a 4-year-old child who had Ewingʹs sarcoma. We reconstructed her hip by an autotransplant of the ipsilateral proximal fibula with its vascular supply, inserted inside a massive bone allograft, and fixed to the residual femur by a plate. Serial postoperative imaging showed the progressive hypertrophy of the transplanted fibula, whose head displayed impressive tridimensional growth inside the acetabulum. 4 years after surgery, hip motility is 100° in flexion, 10° in extension, and 30° in abduction, and the patientʹs limb is weight bearing.