Many patients with proximal tibial, distal femur aggressive benign or malignant bone tumors had been treated with wide resection and reconstruction of the knee joint with a tumor prosthesis or an allograft. Reconstruction of the extensor apparatus, infection, non-union, fracture, high cost and mechanical failure is still a problem. If the patient’s own knee can be preserved while allowing a safe tumor excision, better functional results can be obtained for a long time.

We describe a series of 9 patients with juxta-articular giant cell tumor around the knee treated by extended intra-lesional curettage and chemical cauterization . Articular surface was preserved and subchondral bone was reconstructed with autogenous bone graft. Full function of the limb was preserved in all except one patient with a mean follow up of 3 years.