3D Printed Osteosarcoma of Femur

3D Printed Osteosarcoma of Femur Clinical History A 16-year old male presented with a 3-month history of increasingly swollen and painful right knee. On examination, there was a palpable tender swelling above the right knee. Blood test showed a raised Alkaline Phosphatase level. A knee x-ray showed periosteal reactive changes in the distal femur suspicious for a bone malignancy. The patient then underwent staging CT and MRI evaluation of the right leg. He underwent adjuvant chemotherapy prior to resection of his right femur. He made a full recovery. Pathology The specimen is the patient’s excised distal femur. On the cut surface, there is a large pale infiltrating tumour, 10 cm in greatest diameter, extending through the periosteum near the articular surface. This is an osteosarcoma of the femur. Further InformationOsteosarcomas are a malignant tumour of bones that are characterised by the production of osteoid matrix or immature bone. It is the most common