Fig. 3A–B.

Case 13 was a 7-year-old girl with an osteosarcoma in whom an osteoarticular allograft was performed. The patient had a diaphyseal nonunion in which the internal fixation was replaced and autogenous graft was added to the site, resulting in union at the host-donor junction. (A) This anteroposterior radiograph shows the knee immediately after initial surgery. Note purposely selected size disparity between the transplanted distal femur and the recipient proximal tibia considering the patient’s future growth. (B) This anteroposterior radiograph of the knee was made 10 years after original surgery. Note internal fixation changed from plate to nail to treat the nonunion and remodeling of the proximal tibia according to distal femur transplant size as a result of preservation of tibial growing physis.